which statement describes density? Check all that apply

Density is a chemical property of an object.

The density of an object is constant.

Density is a derived unit of measure.

Density is the sum of the mass and volume of an object.

The density of an object determines whether it will sink or float.

Which Statement Describes Density? Check All That ApplyDensity Is A Chemical Property Of An Object.The

Answers

Answer 1

The following sentences describe density: An object's density is constant. A derived unit of measurement called density An object's density determines whether it will float or sink.

Is an object's density a chemical characteristic?

Without affecting the thing's makeup, the mass of an object can be measured. The volume of an object is comparable in this regard. As a result, there is no requirement for a chemical reaction to determine an object's density, making density a physical feature.

Is density a chemical or physical characteristic?

Physical properties are characteristics of matter that are independent of changes in its chemical composition. Physical characteristics include things like density, colour, hardness, melting, and boiling points.

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Related Questions

For the following chemical reaction:

In the laboratory, a chemist mixed aqueous barium chloride with aqueous potassium oxide which produced solid barium oxide and aqueous potassium chloride

A. Write the complete balanced chemical equation, including phase labels.

B. Identify the type of reaction that has occurred.

C. Identify the indicator that tells you a chemical reaction has occurred.

Answers

Answer:

A. The complete balanced chemical equation, including phase labels, for the reaction is:

BaCl2 (aq) + K2O (aq) → BaO (s) + 2KCl (aq)

B. The type of reaction that has occurred is a double displacement or metathesis reaction. In this reaction, the barium cations (Ba2+) and potassium anions (K+) exchange partners, resulting in the formation of solid barium oxide (BaO) and aqueous potassium chloride (KCl).

C. The indicator that tells you a chemical reaction has occurred is the formation of a solid precipitate. In this reaction, the solid barium oxide (BaO) that forms is a clear indication that a chemical reaction has occurred. Additionally, the fact that the reactants are aqueous and the products include both a solid and an aqueous solution also indicates a chemical reaction has taken place.

Carbon dioxide is an example of a greenhouse gas. Levels of carbon dioxide are increasing in the atmosphere. How are increasing levels of carbon dioxide affecting the atmosphere?
Select the two correct awnsers.
1.less water is evaporating from the oceans
2. Earthquakes and volcanic eruptions are becoming more frequent
3.patterns of rain and snow are changing
4.ice caps are becoming thicker and wider at the North Pole and South Pole
5.oceans waters are becoming warmer

Answers

Global warming brought on by rising carbon dioxide concentrations in the atmosphere is changing weather patterns and ocean temperatures. Changes in precipitation patterns are being brought on by the warming of the atmosphere.

Why does carbon dioxide serve as a representative greenhouse gas?

Because it is one of the gases in the atmosphere that causes the greenhouse effect, which causes the Earth to warm, carbon dioxide is known as a greenhouse gas. Long-wavelength infrared radiation (heat) from the Earth is absorbed by carbon dioxide molecules in the atmosphere, and some of it is then radiated back downward.

What impact does an increase in atmospheric carbon dioxide have?

Similarly, as air temperatures rise in response to rising carbon dioxide concentrations, more water vapor escapes into  the atmosphere—which then amplifies greenhouse heating

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dry ice is solid carbon dioxide. represent carbon dioxide in the following three ways, symbolic, particulate. and macroscopic

Answers

In symbol form, ice is depicted as CO2, in particle form, as molecules of CO2 packed closely together, and in macroscopical form, as a white, crystalline substance that sublimates from a solid to a gas.

How is dry ice defined as solid carbon dioxide?

Because the gas when it solidifies resembles ice, ice ice is actually just carbon dioxide that has been solidified. Unlike regular ice, it instantly transforms into CO2 gas instead of melting into a liquid.

Why is dry ice a good illustration of sublimation?

Solid carbon dioxide is sometimes referred to as "dry ice." That's because when something warms up and changes state, it doesn't just dissolve into a liquid. Instead, it skips the liquid step and transforms right into a gas.

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Which of the following could be a useful IPM monitoring strategy to reduce crop damage from pests?

A.mating disruption devices B.noisemakers C.pesticides D.forecasting software

Answers

Answer:

C. pesticides

Explanation:

hope it helps :)

A + B = AB is an example of a ________reaction

Answers

Answer:

   A + B = AB is an example of a synthesis reaction

Explanation:

!!(100 points)!! For each of the following chemical formulas, identify the elements present and the number of atoms of each element present in each molecule of the substance: H2SO4, Ca(NO3)2

Answers

Answer:

H2SO4 Chemical Name

It contains two atoms of hydrogen, one atom of sulphur, and four atoms of oxygen. It has an atomicity of seven.

Calcium Nitrate is made up of three different elements and contains a total of nine atoms. This compound's formula is Ca(NO3)2. There is one calcium atom, two nitrogen atoms, and there are six oxygen atoms in calcium nitrate.

H2SO4:

-Elements present:

Hydrogen (H), Sulfur (S), Oxygen (O)

Number of atoms of each element present in each molecule of the substance:

Hydrogen (H): 2 atoms

Sulfur (S): 1 atom

Oxygen (O): 4 atoms



Ca(NO3)2:

Elements present:

Calcium (Ca), Nitrogen (N), Oxygen (O)

Number of atoms of each element present in each molecule of the substance:

Calcium (Ca): 1 atom

Nitrogen (N): 2 atoms

Oxygen (O): 6 atoms (2 from each NO3 group)

1.Explain the Theory of Plate Tectonics and provide three observations about the earth
that provide evidence to support the theory. Describe how plate tectonics cause
major geological events such as ocean basins, earthquakes, and volcanic eruptions.
Be sure to:
• Use science terms appropriately
.
• Organize and develop your ideas effectively
• Choose your words carefully
.
• Edit your writing for grammar, mechanics, and spelling

Answers

The Theory of Plate Tectonics is a scientific theory that explains how the Earth's outer shell is composed of several large plates that move and interact with each other over time.

What is the theory of plate tectonics?

Three observations about the Earth that provide evidence to support the Theory of Plate Tectonics are:

Earthquakes: Earthquakes occur when the movement and interaction of the tectonic plates cause rocks to fracture and shift. These seismic events are most common along the boundaries of the tectonic plates, where the movement and interaction are most pronounced. The distribution of earthquakes around the world is consistent with the theory of plate tectonics.

Volcanic Activity: Volcanic activity is closely related to the movement of tectonic plates. Many of the world's most active and well-known volcanoes are located near plate boundaries, where the movement and interaction of plates lead to the formation of magma chambers and the release of volcanic material. This relationship between volcanoes and plate boundaries supports the theory of plate tectonics.

Continental Drift: The theory of plate tectonics also explains the phenomenon of continental drift, which refers to the movement of the Earth's continents over time. According to this theory, the continents are part of the tectonic plates and have moved and shifted over millions of years. The fit of the coastlines of Africa and South America is a well-known example of continental drift and supports the theory of plate tectonics.

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Problem 1. What masses of 15% and 20% solutions are needed to prepare 200 g of 17% solution?
Problem 2. What masses of 18% and 5% solutions are needed to prepare 300 g of 7% solution?
Problem 3. 200 g of 15% and 350 g of 20% solutions were mixed. Calculate mass percentage of final solution.
Problem 4. 300 g of 15% solution and 35 g of solute were mixed. Calculate mass percentage of final solution.
Problem 5. 400 g of 25% solution and 150 g of water were mixed. Calculate mass percentage of final solution.

Answers

Problem 1:

we need 80 g of the 15% solution and 120 g of the 20% solution.

Let x be the mass of the 15% solution needed and y be the mass of the 20% solution needed.

x + y = 200 (total mass of the two solutions)

0.15x + 0.2y = 0.17(200) (total amount of solute in the two solutions)

Solving these equations,  x = 80 g and y = 120 g.

Therefore, we need 80 g of the 15% solution and 120 g of the 20% solution.

Problem 2:

we need 120 g of the 18% solution and 180 g of the 5% solution.

Let x be the mass of the 18% solution needed and y be the mass of the 5% solution needed.

x + y = 300

0.18x + 0.05y = 0.07(300)

Solving these equations, x = 120 g and y = 180 g.

Therefore, we need 120 g of the 18% solution and 180 g of the 5% solution.

Problem 3:

The mass percentage of the final solution is 135 g/550 g × 100% = 24.55%.

The total mass of the final solution is 200 g + 350 g = 550 g.

The total amount of solute in the final solution is:

0.15(200 g) + 0.20(350 g) = 65 g + 70 g = 135 g.

Therefore, the mass percentage of the final solution is 135 g/550 g × 100% = 24.55%.

Problem 4:

The mass percentage of the final solution is 110 g/335 g × 100% = 32.84%.

The total mass of the final solution is 300 g + 35 g = 335 g.

The total amount of solute in the final solution is:

0.15(300 g) + 35 g = 75 g + 35 g = 110 g.

Therefore, the mass percentage of the final solution is 110 g/335 g × 100% = 32.84%.

Problem 5:

The mass percentage of the final solution is 18.18%.

Calculate the final mass of the solution:

Final mass = 400 g + 150 g = 550 g

Calculate the mass of solute in the 25% solution:

Mass of solute = 0.25 x 400 g = 100 g

Calculate the mass percentage of the final solution:

Mass percentage = (mass of solute ÷ final mass) x 100%

Mass percentage = (100 g ÷ 550 g) x 100%

Mass percentage = 18.18%

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The students created a special type of
white powder was a
began to change. The
they were evenly
called a
that was added to water which is the universal
dissolve
the mixture
began to get smaller and spread out until
. As the powder began to
in the water.
The
Think Like a Scientist: What was the mass of this solution?
Make a hypothesis: What was the white powder?

Answers

Plaster of Paris, also known as calcium sulphate hemihydrate (CaSO4 1/2H2O), is the white powder.

What makes water a "universal solvent"?

Water has a much greater variety of natural solvent qualities than any other liquid, earning it the moniker "universal solvent." Yet not all substances can be dissolved by water. For instance, hydroxides, fats, or waxes cannot be dissolved by water because oppositely charged particles are not particularly soluble in it.

Why is water regarded as such a crucial solvent?

Water is regarded as a significant solvent since it has a wide range of necessary for life compounds that it may dissolve. Before they can be eliminated from the body, waste materials must first be dissolved in water.

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How many moles of Ca are required to react with 2.50 mol of Cl to produce the compound CaCl2​

Answers

Answer:

1.25 moles

Explanation:

The balanced chemical equation for the reaction between Ca and Cl to produce CaCl2 is:

Ca + Cl2 → CaCl2

The stoichiometry of the balanced equation tells us that one mole of Ca reacts with one mole of Cl2 to produce one mole of CaCl2. Therefore, to find out how many moles of Ca are required to react with 2.50 mol of Cl, we need to divide 2.50 mol of Cl by the coefficient of Cl2 in the balanced equation, which is 2:

2.50 mol Cl ÷ 2 = 1.25 mol Ca

Therefore, 1.25 moles of Ca are required to react with 2.50 mol of Cl to produce the compound CaCl2.


What is the hydroxide ion concentration of a solution
with a pOH of 5.0?
Select one:
a 5.0 x 10¹¹ M
b 1.0 x 105 M
c 1.0 x 10⁹ M
d 1.0 x 109 M

Answers

Answer: 1.0 X 10^-5 M

Explanation:

to change pOH to OH- it is judt 1 X 10-pOH

so it is 1 x 10^-5

A block of aluminum occupies a volume of 28.0 mL and weighs 85.7g. What is its density?

Answers

Explanation:

The density of a substance is defined as its mass per unit volume. In this problem, we are given the volume and the mass of the aluminum block, so we can calculate its density as follows:

Density = Mass / Volume

Substituting the given values, we get:

Density = 85.7 g / 28.0 mL

Simplifying this expression, we get:

Density = 3.06 g/mL

Therefore, the density of the aluminum block is 3.06 g/mL

Answer:

3.06

Explanation:

5.0 L of a gas goes from 1.0 atm to 1.3 atm.
Calculate the final volume of this gas.
A 6.5 L
B 0.26 L
C 4.1 L
D 3.8 L

Answers

Answer: D) 3.8 L

Explanation:

Boyles law

P1v1=p2v2

V2= p1v1/p2

v2= 1.0 x 5.0 /1.3 = 3.84 L

A buffer solution is made using weak acid, HA, with a pKa of 6.98. If the ratio of [A-] to [HA] is 1.0 x 10^3, what is the pH of the buffer

Answers

The Henderson-Hasselbalch equation can be used to calculate the pH of a buffer solution. The equation is:

pH = pKa + log([A-]/[HA])

In this case, the pKa of HA is 6.98, and the ratio of [A-] to [HA] is 1.0 x 10^3. Plugging in these values, we get:

pH = 6.98 + log(1.0 x 10^3)

pH = 9.98

Therefore, the pH of the buffer solution is 9.98.
yes the answer above is correct

The scientific notation of 45,000

Answers

It would be 4.5 x 10^4

reaction is third order for reactant A and zero order for reactant B. If you quadruple the concentration
of A, what happens to the reaction rate? If you quadruple the concentration of B, what happens to
the reaction rate?

Answers

Regardless of the reactant B concentration, the reactant rate remains constant. As a result, the response rate is unaffected by increasing B's concentration by a factor of four.

In chemical, what is concentration?

The amount of a substance's solute in a specific amount of solution is how concentrated it is. Molarity, or the amount of molecules of solute in one liter of solution, is a common unit of measurement for concentrations.

What exactly are meditation and focus?

Focusing for an extended amount of time on one thing without interruption is meditation. Concentrating the mind on a specific object is the basic exercise of concentration that all meditations begin with. After some practice, concentration can eventually turn into meditation when the mind is calm and not easily diverted by other thoughts.

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Write a balanced chemical equation for the reaction between aqueous hydrogen ion, H+, and aqueous hydroxide ion, OH+

Answers

H+ (aq) + OH- (aq) → H2O (l)

Label each of the three parts of this process with a brief description of what the part shows.

Answers

The three parts are:

Substrate: The reactants that bind to the enzyme are called substrates. These are the molecules that are acted upon by the enzyme.Enzyme-substrate complex: The complex formed when the substrate binds to the active site of the enzyme. This complex helps to break bonds in the reactants and form new bonds, changing the substrates into products.Product: The end result of the enzyme-catalyzed reaction, formed after the enzyme releases the products.

What is the enzymes about?

This passage describes the role of enzymes in biological processes. Enzymes are protein molecules that act as catalysts, speeding up chemical reactions without being used up or changed in the process. They do this by binding to specific reactant molecules, called substrates, at a specific site on the enzyme molecule called the active site.

Only substrates that are shaped to fit the active site can bind to the enzyme. When the enzyme and substrate bind together, they form an enzyme-substrate complex, which helps to break bonds in the substrate molecules and form new bonds, resulting in the formation of products.

Therefore, The enzyme then releases the products and is free to bind with other substrates and repeat the process. The passage also notes that enzymes are important in cell processes that supply energy and that their activity can be affected by factors such as pH and temperature.

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See text below



reactions in the body. Like all catalysts, enzymes

up by the chemical reaction. They can be used again. Also, most enzymes act in just one type of reaction. For example, the enzyme amylase is found in saliva. Amylase helps begin the process of food digestion in the mouth.

The figure below shows how an enzyme works. The reactants that bind to the enzyme are called substrates. The specific location where a substrate binds on an enzyme is called the active site. The substrate and active site are shaped to fit together exactly. Only substrates shaped to fit the active site will bind to the enzyme.

The bond between the enzyme and substrates creates the enzyme-substrate complex. This complex helps to break bonds in the reactants and form new bonds, changing the substrates into products. The enzyme then releases the products.

Enzymes are the chemical workers in cells. The actions of enzymes enable cell processes that supply energy. Factors such as pH and temperature affect enzyme activity.

Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Substrate

Active sites

Substrate Enzyme

Biology online biologygmh.com

Product

Enzyme-substrate complex

Product

Chap

Pi

4

A 25.0 kg iron weight lifting plate has a volume of 3180 cm3 . what is the density of the iron plate in g/cm3?

Answers

Answer:

The density of a substance is given by dividing the mass by the volume.

The S.I units of density are kg/m³, but can be measured by other units such as g/cm³

The mass of the iron is 29 kg or 29000 g

Therefore; Density = 29000 g/ 3680 cm³

                              = 7.880 g/cm³

Hence, the density of the iron plate is 7.880 g/cm³

Explanation:

Which emission spectrum represents the copper?

A.) Spectrum A
B.) Spectrum B
C.) Spectrum C​​

Answers

The emission spectrum of copper can be seen from the spectrum C

What is the emission spectrum?

An emission spectrum is the pattern of wavelengths of electromagnetic radiation emitted by a substance when it is excited by heat, electricity, or some other energy source. Each element, molecule, or compound has a unique emission spectrum, which can be used to identify it or to study its physical and chemical properties.

The emission spectrum is produced when electrons in the atoms or molecules are excited to higher energy levels, and then return to their ground state by releasing energy in the form of photons. The energy of each photon corresponds to a specific wavelength, and the collective emission of all the photons produces a characteristic pattern of bright lines or bands in the electromagnetic spectrum.

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1. Use the bond enthalpies to calculate the enthalpy change for this reaction. Is this reaction endothermic or exothermic?

Change in enthalpy =

Is this reaction exothermic or endothermic?

Answers

If bond formation in the products releases more heat energy than bond breaking in the reactants does.

Endothermic is either hot or cold.

The reverse of exothermic processes is endothermic reactions. They take in thermal energy from the environment. This indicates that endothermic reactions cause their surroundings to get colder. This kind of response can be seen in the melting of ice.

What does it mean to be endothermic?

An organism is said to be endothermic if it expends energy to control the internal temperature of its body. Ectothermic organisms, on the other hand, are those that control their body temperature through external environmental stimuli.

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You are now told that element X is in period 2 and element Y is in period 1.

What is the chemical symbol for elements X and Y?

Answers

Answer:

Since element X is in period 2, it is a member of the second row (or period) of the periodic table of elements. The second period contains the elements Li, Be, B, C, N, O, F, and Ne. Therefore, the chemical symbol for element X could be any of these elements.

Since element Y is in period 1, it is a member of the first row (or period) of the periodic table of elements. The first period contains only two elements, H (Hydrogen) and He (Helium). Therefore, the chemical symbol for element Y could be either H or He.

What physical property of matter can be measured using the triple beam balance?
A
volume
B
mass
C
height
D
length
SUBMIT ANSWER

Answers

Answer:

B) Mass- I searched it up

In an aqueous solution of magnesium bromide, the solute is

Answers

In an aqueous solution of magnesium bromide, the solute is magnesium bromide and the solvent is water.

Aqueous solution of magnesium bromide

The solute in an aqueous solution of magnesium bromide is the solid material, in this case magnesium bromide, dissolved in a liquid, which is the solvent. In this case, the solvent is water. Water is an excellent solvent because of its ability to form hydrogen bonds with other molecules, which allows it to dissolve many different substances.

In addition, it is a polar molecule, meaning that one end of the molecule has a slightly positive charge while the other end has a slightly negative charge. This polarity allows water molecules to interact with molecules of other substances, including magnesium bromide, which is also a polar molecule, allowing it to dissolve in the water.

The interaction between the polar water molecules and the polar magnesium bromide molecules causes the magnesium bromide to break up into its component ions, forming a solution. The ions are then surrounded by water molecules, which keeps them in solution until the solution is evaporated.

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Which statement is one of the assumptions of Kinetic Molecular Theory regarding gasses?
A Collisions between gas particles are inelastic.
The temperature of the gas depends on the average potential energy of the gas particles.
Gas particles are much larger than the distance between them.
The volume of a gas sample mostly consists of empty space between the moving gas particles.

Answers

The statement that "The volume of a gas sample mostly consists of empty space between the moving gas particles" is one of the assumptions of the Kinetic Molecular Theory regarding gases.

What is Collision?

There are different types of collisions, depending on the nature of the objects involved, the speed and direction of their motion, and the type of contact that occurs. For example, elastic collisions are those in which the total kinetic energy of the colliding objects is conserved, meaning that no energy is lost or gained during the collision. In contrast, inelastic collisions are those in which some of the kinetic energy is transformed into other forms of energy, such as heat or sound.

The Kinetic Molecular Theory is a model that describes the behavior of gases. One of the main assumptions of this theory is that gas particles are in constant random motion and move in a straight line until they collide with other particles or the walls of their container.

Another important assumption of this theory is that the volume of a gas sample mostly consists of empty space between the moving gas particles. This means that gas particles are assumed to be very small compared to the overall volume of the gas sample. Therefore, the particles do not occupy all of the available space in the container, but instead only occupy a small portion of it.

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An emission spectrum has a line in the blue region. How does this occur in the atom?


A. An electron ABSORBS a photon as it goes from a HIGHER TO LOWER energy level.

B. An electron EMITS a photon as it goes from a HIGHER TO LOWER energy level.

C. An electron EMITS a photon as it goes from a LOWER TO HIGHER energy level.

D. An electron ABSORBS a photon as it goes from a LOWER TO HIGHER energy level.​

Answers

B. An electron EMITS a photon as it goes from a HIGHER TO LOWER energy level.

When an electron in an atom drops from a higher energy level to a lower energy level, it releases energy in the form of a photon.

What is Spectrum?

In science, the term "spectrum" is often used to describe the range of colors of visible light, known as the "visible spectrum," which includes all the colors of the rainbow. This spectrum is produced when white light is dispersed into its component colors by a prism or other means.

This energy is specific to the atom and its electron configuration, which is why each atom emits a unique set of wavelengths, creating a distinct emission spectrum.

Since the emission spectrum in the question has a line in the blue region, it means that the energy released by the electron corresponds to a specific frequency or wavelength in the blue region of the visible spectrum.

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What's the difference between magnesium and Aluminum?​

Answers

the different is that magnesium is 33 percent lighter then aluminum

Answer:

The key difference between aluminum and magnesium is that the aluminum is a corrosion resistant metal whereas magnesium is not. Magnesium and aluminum are two chemical elements that we can categorize as metals in the periodic table. Both are naturally occurring metals in different mineral forms.

Explanation:

4 Read the sentence from the introduction [paragraph 1].

Matter is capable of undergoing changes, which are classified as either physical or chemical.
Which phrase could BEST replace "is capable of undergoing" in the sentence above?
(A) has the knowledge to perform
(B) has the ability to experience
(C) has the experience to recognize
(D) has the opportunity to facilitate

Answers

Answer: A

Explanation:

You thought i was feeling you that n was a munch

Which one is the most polar based on their Lewis structure: Hydrochloric acid (HCl) or hydroiodic acid (HI)?

Answers

Since there is a larger difference in electronegativity between hydrogen and chlorine than between hydrogen and iodine, hydrochloric acid is more polar than hydroiodic acid.

Is the atom hydrochloric acid, HCl, a polar one?

A polar substance is HCl. This occurs because the more electronegative Chlorine (Cl) atom in the HCl molecule does not evenly share the bonding electrons with the hydrogen atom. (H). However, owing to the molecules' two atoms' similar electronegativity, H2 and Cl2 are not polar.

Which type of material is hydrochloric acid—polar or nonpolar?

Because chlorine is more electronegative than hydrogen, it draws the bonded electron pair closer to it and acquires a partial negative charge, whereas hydrogen acquires a partial positive charge, making chlorine (hydrochloric acid) a polar molecule.

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The diagram below represents a specimen in the low-power field of view of a compound light microscope. If the slide is not moved, which view best represents the way the specimen will look when the high-power objective lens is switched into place?

Answers

Coarse and excellent adjustment The coarse adjustment knob  solely be used with the lowest electricity objective lens. Once it is in focus, you will only need to use the best focus. Using the coarse center of attention with greater lenses may result in crashing the lens into the slide.

Why does the specimen have to be founded in the field of view on low strength before going to high power?

You must have the object situated before you exchange objectives to increase the magnification, because the subject of view turns into smaller; if the object is off to the side, it might also disappear when you go to higher magnification.

When viewing a specimen on a compound light microscope the photograph is right aspect up but reversed True or false?

The optics of a microscope's lenses alternate the orientation of the photo that the consumer sees. A specimen that is right-side up and going through proper on the microscope slide will appear upside-down and going through left when considered through a microscope, and vice versa.

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Stanley wants to know how many students in his school enjoy watching talk shows on TV. He asks this question to all 24 students in his history class and finds that 55% of his classmates enjoy watching talk shows on TV. He claims that 55% of the school's student population would be expected to enjoy watching talk shows on TV. Is Stanley making a valid inference about his population? (1 point) aNo, it is not a valid inference because he asked all 24 students in his history class instead of taking a sample from his math class bNo, it is not a valid inference because his classmates do not make up a random sample of the students in the school cYes, it is a valid inference because his classmates make up a random sample of the students in the school dYes, it is a valid inference because he asked all 24 students in his history class I NEED HELP RIGHT NOW AND CANNOT ASK A TEACHER I AM AT HOME PLEASE HELP 15 POINT IS ALL I HAVE heya i need some help yall 40 PTS!!! On the following composite figure, all angles are right angles. All short edges of the figure have a measure of 1.5 centimeters. All long edges have a measure of 3 centimeters. Find the area of the figure. Explain or show how you got your answer. Using the formula M1V1 = M2V2, how many millimeters of 6.0M sodium hydroxide are required to prepare 2.0L of a 1.0M sodium hydroxide solution?Question Options:200 mL1200 mL300 mL330 mL the value of the slope of a society's production possibility frontier is called its a. unemployment rate. b. marginal rate of transformation. c. marginal rate of substitution. d. inflation rate. which of the following quantities represent mass? check all that apply. which of the following quantities represent mass?check all that apply. 12.0 lb l b 0.34 g g 120 kg k g 1600 kn k n 0.34 m m 411 cm c m In addition to a strong point of view, a well-crafted review is reliant on which of the following?Question 5 options:the reviewer's comprehensive body of knowledge and expertise in the genrea clever headline and nicely presented layouta book, painting or film that holds the audience's attention and isn't offensivea publication that has a good team of lawyers in case the author, artist or filmmaker sues 2. Define the terms culture and media, and explain how each influences health. What are strengths and weaknesses of Passover hello guys can someone help me with this. because my dead line is too close no trolling please i really need it right now i will give brainliest our club has $25$ members, and wishes to pick a president, secretary, and treasurer. in how many ways can we choose the officers, if individual members are allowed to hold $2,$ but not all $3,$ offices? URGENT! 35 POINTS!The expression tan theta - sec^2theta/tan theta simplifies to what expression? tan cot cos sec a saturate solution of lead (ii) chloride (pbcl2) has a ksp value of 17.10-5. if 0.90 moles of chloride ions (cl-) is added to the solution, what will be the concentration of lead ions be in solution? starling wants to retire with $2430000 in his retirement account exactly 40 years from today. he will make annual deposits at the end of each year to fund his retirement account. if he can earn 8 percent per year, how much must he deposit each year? round to the nearest penny. which of the answer choices g are produced directly as a result of the movement of electrons through the photosynthetic electron transport chain? What is the main idea of this paragraph?Over 400 African Americans enlisted to be in the new division. The entrance requirements were very strict, including high experience requirements and a series of IQ and other intelligence tests. Because of discriminatory2 policies in the Army, all the officers in charge of the new recruits were white.The practical training took place at the Tuskegee Air Fields in Alabama, and the trainees also took courses at Tuskegee University nearby. They quickly proved their personal drive to learn and their skills as pilots. Their proficiency3 struck blows at previous race-based policies in the military; they soon needed to undergo highly advanced training that African Americans had previously been barred from receiving.The Tuskegee Air program gained national attention when First Lady Eleanor Roosevelt paid them a visit in 1941. She rode as a passenger of pilot C. Alfred Chief Anderson, who had become an unofficial leader and tutor in the group because of his skills. After the trip, she remarked, Well, you can fly all right. PLEASE HELP! URGENT AND WORTH 50 POINTS!!! when something hinders or prevents an audience member from receiving a message, it is called . bill has a collection of 40 nickels and dimes. together, they add up to $3.50. how many does bill have of each coin?