Answer:
The periodic table has been there for such a long time and how it is helpful in all science it is the element itself. How the element is used in real life. For example, oxygen is used in the atmosphere. Plants use carbon in order to covert it into oxygen more like that
caulculate the number of mass of 0.25 mol of carbon dioxide molecules
Which of the following is the smallest number?
100
1
.0035
.0000000000000000000003
Answer:
.0000000000000000000003
Explanation:
PLEASE PLEASE HELP ME WITH THIS ASAP
Answer: 3.45
Explanation:
Why do you think some seasons are more likely than others to experience a tornado
Earth's lithosphere floats on a hot, plastic layer which allows plate movement. What is this layer called?
crust
asthenosphere
atmosphere
core
Answer:
atmoshpere
Explanation:
il explain in comment if you brainly me
Continual eruptions occur along mid-ocean ridges, forming new sea-floor rock. The
rocks closest to a mid-ocean ridge are the youngest | oldest. As you move away from
a mid-ocean ridge, the rocks get younger | older. This implies that crust is being
consumed | produced at mid-ocean ridges
The characteristics of the ocean ridges allow finding the results to complete the statements are:
The rocks near the ridge are YOUNGER. While you walk away the rocks are OLDER. This implies that the cortex is PRODUCING in the ridges.
The oceanic ridges are mountain ranges or chains of volcanic mountains at the bottom of the ocean, in these the magma that rises cools and forms young rocks, in they are pushed by the other rocks that emerge, in general they are located on the edges of the tectonic plates .
Therefore, the oceanic ridges are the point where the earth's crust is separating, therefore it has the youngest rocks and in the furthest points it has the oldest.
Let's find the correct words for each phrase to be correct:
The rocks near the ridge are YOUNGER. You walk away the rocks are OLDER. This implies that the cortex is PRODUCING in the ridges.
As a consequence of the characteristics of the ocean ridges, we can find the results to complete the statements are:
The rocks near the ridge are YOUNGER. While you walk away the rocks are OLDER. This implies that the cortex is PRODUCING in the ridges.
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What trophic level has heterotrophs?
a only the second level
b all levels except the first
C only the first level
d only the last level
An image of Earth's layer is above.
Which layer is the most dense?
layer A
layer B
layer C
layer D
Answer:
d
Explanation:
il answer in comments if you brainly me
what would the heat transfer be if you are making macaroni and it rises and falls in a pot on the stove ?
What coefficient is needed to balance the reaction
CaCl2 + H2CO3 → CaCO3 + HCI?
Answer:
CaCl2 + H2CO3 -> CaCO3 + 2HCl
Explanation:
Balancing this equation was a relatively simple example. Making sure to have all parts on the left equal to the ones on the right is the most important part.
Ca 1 = 1
Cl 2 = 2
H 2 = 2
C 1 = 1
O 3 = 3
Answer:2HCl
Explanation: just did it
Please help me help please help
Answer:
i don't know if Im converting it to newtons or picograms
Explanation:
in newtons the coefficient is 8.5 and the exponent is 2. sorry if i'm wrong
If the reaction occurs between Fe2S3(s) and H(aq) and the equation is properly balanced with the
smallest whole-number coefficients, what is the sum of the coefficients for all reactants and products?
Fe2S3(s) + H+ (aq)
Please answer this mathematically.
In the reaction between Fe₂S₃(s) and HBr(aq), the sum of the coefficients for all reactants and products is 12.
If the reaction occurs between Fe₂S₃(s) and HBr(aq) and the equation is properly balanced with the smallest whole-number coefficients, what is the sum of the coefficients for all reactants and products?
Let's consider the unbalanced equation for the reaction between Fe₂S₃(s) and HBr(aq). This is a double displacement reaction.
Fe₂S₃(s) + HBr(aq) ⇒ FeBr₃(aq) + H₂S(g)
We will balance it using the trial and error method.
First, we will balance Fe atoms by multiplying FeBr₃ by 2.
Fe₂S₃(s) + HBr(aq) ⇒ 2 FeBr₃(aq) + H₂S(g)
Then, we will balance S atoms by multiplying H₂S by 3.
Fe₂S₃(s) + HBr(aq) ⇒ 2 FeBr₃(aq) + 3 H₂S(g)
Finally, we will get the balanced equation by multiplying HBr by 6.
Fe₂S₃(s) + 6 HBr(aq) ⇒ 2 FeBr₃(aq) + 3 H₂S(g)
The sum of the coefficients for all reactants and products is:
[tex]1 + 6 + 2 +3 = 12[/tex]
In the reaction between Fe₂S₃(s) and HBr(aq), the sum of the coefficients for all reactants and products is 12.
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What is an engineer?
a person trained to use technology and science to solve problems
b. a person who manufactures or produces a product
с. a person who markets and advertises a product
d all of the above
What is the function of the load in
an electric circuit?
Question 1 of 10 What is the maximum number of electrons that can occupy one orbital?
A. 6
B. 8
C. 2
D. 1
Answer:
C. 2
Explanation:
Is a "wave function that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule."
The Density equation is:
Answer:
p=m/v
p equals density M equals mass and v = volume
Chemical contamination is more likely to
occur under which of the following
situations?
When cleaning products are not stored properly
When dishes are sanitized with a chlorine
solution
When raw poultry is stored above a ready-to-eat
food
When vegetables are prepared on a cutting
board that has not been sanitized
Chemical contamination is likely to occur when cleaning products are not stored properly.
Chemical contamination refers to the introduction of harmful chemicals into food, water or the environment. These chemical substances may come in contact with food and water in many ways.
The most common sources of chemical contamination are chemical substances that are not properly stored.
Hence, chemical contamination is likely to occur when cleaning products are not stored properly.
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Another way to say density
A. Density
B. Mass divided by volume
C. Water
D. Element
In chemistry, densities of substances are often compared to the density of this substance.
A. Density
B. Mass divided by volume
C. Water
D. Element
These have unique densities associated with them.
A. Density
B. Mass divided by volume
C. Water
D. Element
Answer:
A
Explanation:
Another way to say Density is Density
Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. The density is mass divided by volume. the correct option is option A.
What is density?Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water. Density is mass divided by volume.
Mathematically, density can be written as : Density = Mass of the substance÷ volume marked on the graduated cylinder. Density is directly proportional to mass and inversely proportional to volume. Density of water is 1 gram per cubic centimeter.
Therefore, density is mass divided by volume. the correct option is option A.
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many substance are compound what is a compound
Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds.
Answer:
A compound is a unique substance that consists of two or more elements combined in fixed proportions.
Explanation:
okkk
calculate the boiling point elevation for solution of 25.0 grams of menthol in 130 grams of ethanol. Ethanol boiling point elevation constant is 1.22 oC/m
Answer:
Explanation:
When a solute is added to a solvent, the vapor pressure of the solvent (above the resulting solution) is less than the vapor pressure above the pure solvent. The boiling point of a solution, then, will be greater than the boiling point of the pure solvent because the solution (which has a lower vapor pressure) will need to be heated to a higher temperature in order for the vapor pressure to become equal to the external pressure (i.e., the boiling point).
The boiling point of the solvent above a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution).
I cant give you the answer but I hope this helps.
Select the statements that correctly describe an meteoroid. Check all that apply
largest of the space rocks.
smallest of the space rocks
when in the atmosphere, they are called a meteor
they never come near Earth
Answer:
they are the smallest of space rocks, when in the atmosphere they are called meteors.
Explanation:
i think this is right.
18) Max can lift 180 x 104 grams with ease. How much is this in pounds
Answer:
41.184 pounds
Explanation:
Calculate the total grams first.
180 x 104 = 18,720 grams
Convert that into kilograms (kg)
18,720g 1 kg
------------ X ------------- = 18.720 kg
1 1000 g
Convert kilograms into pounds.
18.729 kg 2.2 lb
--------------- X ----------- = 41.184 lb (pounds)
1 1 kg
3. Which statements are true based on the Bohr model of the atom? Select all that
apply.
encore
a. Atomic emission spectra are due to electrons losing energy and changing
energy levels
b. The energy of transition for n=3 to n=4 would be the same as n=5 to n=6
c. The first energy level is set at zero energy
d. Electrons lose energy as they travel around the nucleus
e. Each energy level has a specific energy value
The model of Neils Bohr postulates that electrons in atoms are found in specific energy levels. Transition from a higher to a lower energy level produces an emission spectrum characteristic of elements.
According to Bohr's model of the atom, an electron in atom exists in distinct energy levels. Electrons can be promoted from lower to higher energy levels when they absorb energy. The electrons are unstable in this higher energy excited state hence they quickly return to the ground state emitting energy. This emission is characteristic of elements.
The following statements are true based on the Bohr model;
Atomic emission spectra are due to electrons losing energy and changing energy levels.Each energy level has a specific energy valueLearn more: https://brainly.com/question/24556237
Look at screen shot.
Answer:
If the cell was a city, what would the city have inside it for it to function as a cell?
Explanation:
The cell membrane can be a fence or wall around the city because it controls what enters and leaves the cell, and separates the cell from the outside.
The nucleus could be the city hall because it protects DNA and controls the cell (city)
The mitochondria could be the greenhouse because it makes ATP energy from sugar + 02
The chloroplasts could be a farm or garden because it is where photosynthesis takes place and makes energy + sugar from sunlight
The ribosomes could be the factory to make stuff because it makes proteins
The endoplasmic reticulum could be a kitchen or restaurant because it helps finish proteins, and makes membranes.
The golgi apparatus could be the postal office because it finishes packages and ships proteins
The vacuoles could be a water tank because it storages water
I hope this helps. It is basically as if something was turning into a city-type thing. Like Lysosome could be a recycling center in a city.
A reaction occurs that results in a molecule with two atoms of the same element. The atoms share six electrons. Which molecule could be the product of the reaction?
Si2
N2
O2
F2
Answer:
n2 is correct
Explanation:
i took it just now. :)
The product of this reaction could be N2.
Among the options, only atoms of nitrogen have five electrons on their outermost shell.
The fact that they have five electrons in their outermost shells implies that they can combine by sharing six electrons in a triple bond.
When this occurs, each of the nitrogen atoms involved in the bond now has an octet of electrons. Hence, the product formed when the atoms share six electrons. Which molecule could be the product of the reaction is N2.
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Can somebody please help me do the last part of the paper with the help of the information on top
Answer:
i dont know the answer of this question... im sorry
Answer the image I took, I’m studying for a test, and this specific question is hard
Answer:
specific question is hard for me too
¿Qué son las fuerzas intramoleculares?
Respuesta:
Las fuerzas intermoleculares que actúan entre las moléculas se clasifican en : Dipolos permanentes. Dipolos inducidos. Dipolos dispersos.
Explicación:
Dentro de una molécula, los átomos están unidos mediante fuerzas intramoleculares (enlaces iónicos, metálicos o covalentes, principalmente). Estas son las fuerzas que se deben vencer para que se produzca un cambio químico. Son estas fuerzas, por tanto, las que determinan las propiedades químicas de las sustancias.
Sin embargo existen otras fuerzas intermoleculares que actúan sobre distintas moléculas o iones y que hacen que éstos se atraigan o se repelan. Estas fuerzas son las que determinan las propiedades físicas de las sustancias como, por ejemplo, el estado de agregación, el punto de fusión y de ebullición, la solubilidad, la tensión superficial, la densidad, etc.
Giving brainliest!!!!!!!!!!!!!
I am the first one to comment, please give me the brainliest <3
Liquid octane CH3(CH2)6CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 3.43 g of octane is mixed with 7.0 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to significant digits.
Answer:
88 gram is the answer in 2 significant digits
One mole of octane gives 9 moles of water. Then, 3.43 g or 0.03 moles of octane will give 0.27 moles of water that is 4.86 g of water can be produced.
What is combustion reaction ?Combustion is a type of chemical reaction in which a gas reacts with oxygen to give carbon dioxide and water.
The combustion reaction of octane is given as follows:
[tex]\rm C_{8}H_{18} + \frac{25}{2}O_{2} \rightarrow 8CO_{2} + 9 H_{2}O[/tex]
As per this balanced chemical equation, one mole or 114 g of octane gives 9 moles of water.
no.of moles in 3.4 g of octane = 3.4 g/114 g = 0.03 moles.
no.of moles of water produced from 0.03 moles of octane :
= (0.03 × 9) = 0.27 moles.
Molar mass of water = 18 g/mol
then, mass of 0.27 moles = 0.27 × 18 =4.86 g.
Therefore, the maximum mass of water that could be produced here is 4.86 g.
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