Strong electrolytes completely dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes do not dissociate is the following statements is true about strong, weak, and nonelectrolytes.
What is electrolytes?
An electrolyte is a substance that transmits electrical current due to its breakdown into positively and negatively charged particles known as ions. These ions typically move toward and discharge at the negative and positive terminals (cathode and anode) of an electric circuit, respectively.
What is strong electrolytes?
A strong electrolyte is a soluble ionic compound that dissociates completely into ions when dissolved in water.
Therefore, Strong electrolytes completely dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes do not dissociate is the following statements is true about strong, weak, and nonelectrolytes.
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Answer:
Strong electrolytes completely dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes do not dissociate.
Explanation:
A person with type A blood (AO) is crossed with a person with type B blood (BO). Which of the following shows the correct phenotype percentages.
If a person with type A blood (AO) is crossed with a person with type B blood (BO), the correct genotype percentage is 25% AB, 25% BO 25%AO, and 25% OO while the phenotypes are 25% A, 25% B, 25% AB and 25% O.
What is a punnet square in genetics?A punnet square in genetics is a useful diagram to estimate the phenotypes in offspring, in this case we have
A O
B AB BO
O AO OO
Therefore, with this data, we can see that the punnet square can be used to estimate phenotypes and thus determine the proportion of offspring.
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When the astronaut took this photo of Earth, what moon phase would have been visible in View from Earth?
Based on the photo provided, it appears to be a picture of the Earth as seen from space. Unfortunately, I cannot determine the phase of the Moon from this image alone as the Moon is not visible in the photo.
What are the phases of the moon ?
The phases of the Moon are the different appearances of the illuminated portion of the Moon as seen from Earth. There are eight commonly recognized phases of the Moon, which are:
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon
Waning Gibbous, Third Quarter, Waning Crescent
The entire cycle of lunar phases takes approximately 29.5 days to complete, which is known as a lunar month.
Based on the photo provided, it appears to be a picture of the Earth as seen from space. Unfortunately, I cannot determine the phase of the Moon from this image alone as the Moon is not visible in the photo.
The phase of the Moon changes continuously over a period of approximately 29.5 days, so it would be necessary to have a separate photo of the Moon to determine its phase at the time the astronaut took this picture.
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Compare the ground-state electron configuration of oxygen and sulfur to that of selenium. What similarities or differences do you observe? How do you think this will affect the relative chemical or physical properties of these elements?
please help i need this as soon as possible thx
The ground-state electron configurations of oxygen, sulfur, and selenium are 2-8-8, 2-8-6, and 2-8-8-6 respectively. Oxygen and selenium both have 8 electrons in their outermost shell, while sulfur has 6.
This difference affects the chemical and physical properties of these elements, as elements with more electrons in their outermost shells tend to be more reactive due to increased electron availability for bonding.
As oxygen and selenium have the same number of electrons in their outermost shell, they have similar chemical and physical properties. Sulfur, with its fewer outer shell electrons, has different chemical and physical properties than oxygen and selenium.
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Use the equation for Charles’s Law to calculate the following. (2pts)
A plastic bottle is filled with a gas to the volume of 0.50 L at a temperature of 294.15K. The bottle then placed in a freezer for 24 hours at a temperature of 273.15K.
What is the volume of gas inside the plastic bottle when it is taken out of the freezer?
Answer:
670,385k
Explanation:
Please help me with this.
The number of moles of aluminum chloride that forms when 81g of aluminium reacts is 3 moles.
How to calculate stoichiometry?Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
According to this question, aluminium reacts with chlorine to produce aluminum chloride.
Based on the balanced equation, 2 moles of aluminum produces 2 moles of aluminium chloride.
81 g of aluminium is equivalent to 3 moles of aluminum
This means that 3 moles of aluminum chloride will be produced if 3 moles of aluminum reacts.
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S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
In the above equation, how many moles of water can be made when 29 moles of HNO3 are consumed?
Explanation:
Using mole-mole relationship
If 6 moles of HNO3 will give 2 moles of H20
That means,
1 mole of HNO3 will give 1/3 moles of H20
Therefore,
29 mole of HNO3 will give [(1/3) x 29] moles
= 29/3 moles
= 9.67 moles
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A student prepares a solution by dissolving 20.0 g of aluminum chloride (AICI3) in
enough water to produce 500 mL of solution. What is the molarity of the solution?
Polici
0.160 M
0.320 M
0.080 M
0.040 M
A solution must be at a higher temperature than a pure solvent to boil. Which
colligative property can be employed to achieve this?
freezing-point depression
boiling-point elevation
vapor-pressure lowering
Which example will dissolve most slowly?
two sugar cubes
a tablespoon of ultrafine sugar
a tablespoon of table sugar
a tablespoon of coarse sugar
Answer: b
Explanation:
20.0g AlCl3/133.5715 g Alcl3 = .149732540 moles AlCl3
M=mol/L = 0.149732540/0.500=0.30
133.4515 (molar mass for AlCl3 from periodic table)
Answer:the second answer is boiling point elevation
the third answer is two sugar cubes
Explanation:
If the moon is half full on June 15, on approximately what date will it next become full? O A. June 29 O B. June 22 O C. July 14 O D. July 7 SUDIAIT
The next full moon will occur around July 14, which is answer choice C.
What is moon ?
The moon is a natural satellite of the Earth, meaning it is a celestial body that orbits the Earth. It is the fifth largest moon in the solar system and is the largest relative to the size of its host planet.
The moon is approximately one-quarter the size of the Earth and is the closest astronomical object to the Earth.
If the moon is half full on June 15, then we can determine the next full moon by adding approximately 29.5 days to June 15, which is the average length of time for the moon to complete a full cycle of phases.
So, the next full moon will occur around July 14, which is answer choice C.
Therefore, option C is the correct answer.
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How many type of particles is a pure substance made up of?
A pure substance is made up of only one type of particle as this is the reason for the denomination 'pure'.
What is the relative chemical composition of a pure substance?The relative chemical composition of a pure substance is based on only one type of compound or element, which is thus the major determinant of a substance to be considered pure for a given solution.
Therefore, with this data, we can see that the relative chemical composition of a pure substance is based on the presence of one class of element.
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Answer:
A pure substance is made up of only one type of particle. These particles can be atoms, ions, or molecules, depending on the nature of the substance. In other words, a pure substance is homogeneous, meaning that it has the same composition and properties throughout its entire volume.
How many molecules of hydrogen are required to react with 65 molecules of nitrogen?
Explanation:
Refer to pic...........
please separate them so I can put it in the right box AND
PLEASE DON'T GET IT FROM WEBSITE MAKE UP YOUR OWN
if it's right Phases of Matter—Comic Strip Template
Instructions: Create a comic strip detailing the adventure of your character as the character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. Place drawings inside the boxes and written content on the lines below each box.
Your presentation must include the following:
title and introduction of your character, including what substance it is made of
source of thermal energy your character encountered (conduction, convection, and/or radiation)
detailed description and/or diagram of the particle transformation from solid to liquid phase
detailed description and/or diagram of the particle transformation from liquid to gas phase
Title of your comic strip: __________________________
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________________________
________________________
________________________
________________________
________________________
________________________
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________________________
________________________
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will make brainiest :)
Title of your comic strip: Adventures of Ice Cube.
So, the title will be "Adventure of Ice Cube".
Define the term title.
The term title refers to the name or heading given to a book, article, movie, piece of music, or other creative work that identifies it and distinguishes it from other works. It can also refer to a position or designation given to a person, such as a job title or academic title.
Box 1:
Introduction of character: Meet Ice Cube, a small, square-shaped piece of ice made of water molecules. Ice Cube was comfortably sitting in a glass of water until he was exposed to thermal energy.
Caption: This is Ice Cube. He is made of water molecules.
Box 2:
Source of thermal energy: A warm hand holding the glass of water.
Caption: Suddenly, a warm hand holds the glass of water.
Box 3:
Solid to liquid phase: Ice Cube starts to melt and becomes a liquid as it absorbs thermal energy from the warm hand.
Caption: Ice Cube starts to melt as he absorbs thermal energy from the warm hand.
Box 4:
Liquid to gas phase: Ice Cube continues to absorb thermal energy, and as a result, it transforms into water vapor and evaporates into the air.
Caption: As Ice Cube continues to absorb thermal energy, it transforms into water vapor and evaporates into the air.
Box 5:
Conclusion: Ice Cube's adventure comes to an end, but he realizes that he is never really gone, as his water molecules will always be a part of the water cycle.
Caption: The end. Ice Cube is gone, but his water molecules will always be a part of the water cycle.
Box 6:
Additional Information: Show the water cycle and explain how Ice Cube's water molecules can be a part of it.
Caption: Ice Cube's water molecules will eventually come together with other water molecules to form clouds and rain. Then, they will flow into rivers and oceans, and the cycle starts again.
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Calculate the mass of iron contained in 95.00 grams of iron(II) chloride.
Explanation:
Refer to pic above........
To determine the mass of iron in 95.00 grammes of iron(II) chloride, we must first determine the compound's molecular formula.
The formula for iron(II) chloride is FeCl2.FeCl2 has the following molar mass:1 x 55.845 g/mol equals 55.845 g/mol 2 x 35.45 g/mol = 70.90 g/mol Cl FeCl2 molar mass = 55.845 + 70.90 = 126.745 g/mol
We can now use the molar mass of FeCl2 to calculate the number of moles of FeCl2 contained in 95.00 grammes of the compound: The number of moles equals the mass molar mass. FeCl2 molecular weight = 95.00 g 126.745 g/mol = 0.7492 mol
Because FeCl2 contains one iron atom per molecule, the sample contains 0.7492 mol of iron. Iron mass = number of moles of Fe molar mass of Fe Iron mass = 0.7492 mol 55.845 g/mol = 41.96 g As a result, the iron mass in 95.00 grammes of iron(II) chloride is 41.96 grammes.
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Write the condensed formulas and provide IUPAC name for the following compound:
(a ethyl alcohol (in beverages)
The condensed formula and IUPAC nomenclature for the chemical ethyl alcohol are [tex]C_{2} H_{6} O[/tex].
The condensed formula approach is what?Condensed structural formulae, which conserve space and are easier and faster to type out, display the atoms' positions similarly to a structural formula but on a single line. When demonstrating how a group of atoms in a molecule are linked to a single atom, condensed structural formulae are also helpful.
How do you tell whether a formula has been compressed?The hydrogens (or other ions or groups) that are connected to the carbon atoms are immediately next to one another in condensed chemical formulations. The corners and endpoints of lines are assumed to have carbon atoms in line-angle formulae. As each carbon atom is connected to four hydrogen molecules in total, it is assumed that each one has four bonds.
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Outline why there is no limit to the number of control variables that an experiment can have.
Most experimental designs measures solely one or two variables at a time. Any different factor, which could probably impact the results, should be efficaciously controlled.
Why is it vital to restriction the number of variables in an experiment?Controlling variables is important due to the fact mild variations in the experimental set-up ought to strongly have an effect on the result being measured.
Can an scan have extra than one controlled variable explain?Controlled variables are portions that a scientist needs to remain constant. If they had been altered, it would appreciably have an effect on the experiment's results. Most experiments have extra than one controlled variable.
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How many atoms are in 0.28 moles of Beryllium (Be)?
Answer:
To determine the number of atoms in 0.28 moles of Beryllium (Be), we need to use Avogadro's number, which is 6.022 x 10^23 atoms per mole.
First, we can calculate the number of moles of Beryllium (Be) in 0.28 moles by multiplying it by Avogadro's number:
0.28 moles x 6.022 x 10^23 atoms/mole = 1.68496 x 10^23 atoms
Therefore, there are approximately 1.68 x 10^23 atoms in 0.28 moles of Beryllium (Be).
Explanation:
Calculate the total number of ions in 3. 93 mol MgCl2
The total number of the ions in the 3.93 mol of the MgCl₂ is 7.09 × 10²⁴ ions .
The chemical equation is as follows :
MgCl₂ ---> Mg⁺ + 2Cl⁻
The total number of the ions of MgCl₂ = 1 Mg⁺ + 2 Cl⁻
The total number of the ions of MgCl₂ = 3 ions
The number of the moles of the MgCl₂ = 3.93 mol
1 mole of the substance = 6.022 × 10²³ ions
The total number of the moles of substance = 3 × 3.93 × 6.022 × 10²³ ions
The total number of the moles of ions = 7.09 × 10²⁴ ions
Thus, the total number of the ions of the MgCl₂ is 7.09 × 10²⁴ ions .
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What makes hydrogen and methane hard to condense?
In the titration of 25. 00 mL of a water sample, it took 19. 840 mL of 4. 395x10^-3 M EDTA solution to reach the endpoint. Calculate the number of moles of EDTA required to titrate the water sample. (enter your answer with 3 significant figures)
the number of moles of EDTA required to titrate the water sample is 0.0000872 moles.
We can use the equation for molarity to calculate the number of moles of EDTA required to titrate the water sample:
Molarity = moles of solute / liters of solution
First, we need to calculate the number of liters of EDTA solution used in the titration:
19.840 mL = 19.840 mL x (1 L / 1000 mL) = 0.019840 L
Next, we can use the equation for molarity to solve for the number of moles of EDTA:
Molarity = 4.395x
[tex] {10}^{3} [/tex]
M
Liters of solution = 0.019840 L
moles of solute = Molarity x liters of solution
moles of EDTA = (4.395x
[tex] {10}^{ - 3} [/tex]
M) x (0.019840 L) = 8.720x
[tex] {10}^{ - 5} [/tex]
moles
Therefore, the number of moles of EDTA required to titrate the water sample is 8.720x
[tex] {10}^{ - 5} [/tex]
moles (or 0.0000872 moles) to three significant figures.
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The beta decay of potassium 40 produces a beta particle and an atom with an atomic number of
A:18
B:39
C:20
D:21
The beta decay of potassium 40 produces a beta particle and an atom with an atomic number of 19.
So option C is correct answer.
What is Atomic Number?
The atomic number is the number of protons found in the nucleus of an atom of a chemical element. It is a fundamental property of an element, which determines its identity and its position in the periodic table.
Each element has a unique atomic number, which is represented by the symbol Z. For example, the element hydrogen has an atomic number of 1, which means that it has one proton in its nucleus. The element carbon has an atomic number of 6, indicating that it has six protons in its nucleus.
potassium that undergoes beta decay. During beta decay, a neutron in the nucleus of the potassium 40 atom is converted into a proton, and a beta particle (which is an electron) is emitted. The resulting atom has one more proton in its nucleus than the original atom, so its atomic number increases by one to 20.
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__Cu + __AgNO3 —-> Cu(NO3)2 + __Ag
what’s the balanced equation?
what the molar ratio for
1) Cu to AgNO2
2) Cu to Ag
Answer:
1. 1 mole of Cu to 2 moles of AgNO3
2. 1 mole of Cu to 2 moles of Ag
Explanation:
Cu + 2AgNO3 —-> Cu(NO3)2 + 2Ag
Cu = 1
Ag = 2
NO3 = 2
1. 1 mole of Cu to 2 moles of AgNO3
2. 1 mole of Cu to 2 moles of Ag
Please help and answer this
According to the observations, work of scientist uses evidence while work of an engineer uses a practical approach.
What are observations?Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.
It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.
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What percent of a sample of As-81 remains un-decayed after 43.2 seconds?
Answer:
As-81 undergoes radioactive decay with a half-life of 33 seconds. This means that after 33 seconds, half of the original sample would have decayed, and after another 33 seconds, half of the remaining sample would have decayed, and so on.
To find the percent of the sample that remains un-decayed after 43.2 seconds, we can use the following formula:
percent remaining = (1/2)^(t/h) x 100%
where t is the time elapsed and h is the half-life.
Substituting the given values, we get:
percent remaining = (1/2)^(43.2/33) x 100%
percent remaining ≈ 23.2%
Therefore, about 23.2% of the As-81 sample remains un-decayed after 43.2 seconds.
Explanation:
A sample of oxygen, O 2 , occupies 32.2 mL at 30 °C and 452 torr. What volume will it occupy at –70 °C and the same pressure?
The volume that the oxygen gas will occupy at 32.2mL and 30°C is 21.57mL.
How to calculate volume?The volume of a gas can be calculated using the combined gas law as follows:
P₁V₁/T₁ = P₂V₂/T₂
Where;
P₁, V₁ and T₁ = initial pressure, volume, and temperature respectivelyP₂, V₂ and T₂ = final pressure, volume and temperature respectivelyAccording to this question, a sample of oxygen gas occupies 32.2 mL at 30 °C and 452 torr.
452 × 32.2/303 = 452 × V/203
48.03 = 2.226V
V = 21.57mL
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How many molecules of 2.21 moles of propane (C3H8)?
Answer: Lebron
Explanation: James was here
A student is making a solution of sugar in water. If the student uses 0.55 moles of sugar and enough water to make 908.08 milliliters of solution, what is the molarity of the student's sugar solution?
Answer:
Molarity is defined as the number of moles of solute per liter of solution. In this problem, we are given the number of moles of sugar and the volume of the solution in milliliters. We first need to convert the volume to liters before we can calculate the molarity.
To convert milliliters to liters, we divide by 1000:
908.08 milliliters = 908.08/1000 = 0.90808 liters
Now we can use the formula for molarity:
Molarity = moles of solute / liters of solution
Plugging in the given values, we get:
Molarity = 0.55 moles / 0.90808 liters
Molarity = 0.606 M (rounded to three significant figures)
Therefore, the molarity of the student's sugar solution is 0.606 M.
Answer:
The molarity of the student's sugar solution is 0.60 M.
Explanation:
Question 23
How would a base isolation system help to protect a building during an earthquake?
A. The base isolation system makes the building move in an opposite direction to
the shaking ground.
B. The base isolation system reduces the strength of an earthquake wave before it
reaches the building.
C. The base isolation system changes the direction of an earthquake wave before it
reaches the building.
D. The base isolation system prevents the building from coming into direct contact
with the shaking ground.
Answer:
D. The base isolation system prevents the building from coming into direct contact with the shaking ground.
Explanation:
During an earthquake, the ground moves rapidly and can cause significant damage to buildings and infrastructure. A base isolation system is a technique used to protect buildings and other structures from earthquake damage by reducing the amount of shaking they experience. The system involves isolating the building's foundation from the ground using flexible bearings, springs, or pads. This helps to decouple the building from the shaking ground and reduce the amount of energy that is transferred to the structure during an earthquake. By preventing direct contact between the building and the ground, the base isolation system can help to minimize damage to the building and improve its chances of survival during a seismic event.
Answer: D
Explanation: The base isolation system prevents the building from coming into direct contact with the shaking ground. RAHHHHHHHHH
Flourinated gases are made by humans and used as coolants in refrigerators and air conditioning systems. Fluorinated gas molecules have a low chemical reactivity, so they tend to stay in the atmosphere and trap heat energy. The graph below shows emissions of fluorinated gases from 1990 to 2013.
The graph supports the following statement: The use of fluorinated gases has contributed to global warming.
What role do fluorinated gases play in global warming?
Fluorinated gases, also known as F-gases, are a class of man-made gases found in a variety of industrial and commercial applications such as refrigeration and air conditioning systems, electrical equipment, and aerosol sprays. They consist of hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulphur hexafluoride (SF6).
F-gases are potent greenhouse gases, meaning they have a high global warming potential (GWP), which is a measure of their ability to trap heat in the atmosphere. HFCs, for example, have a GWP thousands of times greater than carbon dioxide (CO2).
F-gases contribute to global warming by trapping heat and preventing it from escaping into space when they are released into the atmosphere. The greenhouse effect causes the Earth's temperature to rise, resulting in climate change.
F-gases, in addition to having a direct impact on global warming, can indirectly contribute to climate change by encouraging the use of energy-intensive technologies such as air conditioning and refrigeration systems. Increased energy demand may result in the use of fossil fuels, which increases greenhouse gas emissions and worsens global warming.
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You observe that when oil and water combine, oil always rests on top of the water. What can be said about the density of oil and water?
The density of oil must be greater than the density of water.
The density of oil must be less than the density of water.
The density of oil must be the same as the density of water.
Answer: As a result, when you add oil to a cup of water the two don't mix with each other. Because oil is less dense than water, it will always float on top of water, creating a surface layer of oil.
Which of the following atoms would
share properties and number of
electrons in their outermost energy
level?
a. Ne, Ar, and Kr
c. Si, As, and Sb
b. Li, Ca, and Mg
d. P, S, and Cl
Ne, Ar, and Kr share properties and the number of electrons in their outermost energy level because they belong to the same group (noble gases). Therefore, option A is correct.
What are noble gases and their properties?Any of a class of rare gases with high stability and very low reaction rates, such as helium, neon, argon, krypton, xenon, and occasionally radon. also known as the inert gas.
Noble gases are low chemically reactive, odorless, colorless, nonflammable, and monotonic gases. Noble gases are exceedingly stable and unlikely to form chemical connections since they have the minimal inclination to receive or lose electrons. Hence, option A is correct.
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Separate the Pennie’s you have into two groups: one group with Pennie’s dated before 1982 and the other with pennies dated after 1982. Compare the two groups. Record any similarities or differences in size or appearance that you notice between the two groups
Using hypothetical scenario, the Separation of the Pennie’s are given below
What are the Pennies about?Pennies dated after 1982 are lighter and thinner because zinc is less dense than copper. However, they have a similar diameter of 19.05mm to pennies dated before 1982. The difference in composition between the two groups is important because copper is a valuable metal, and the cost of producing a penny exceeded its value. By reducing the amount of copper in pennies, the U.S. Mint was able to save money on production costs.
Pennies dated before 1982 are made of 95% copper and 5% zinc and weigh 3.11 grams. They have a diameter of 19.05mm and a thickness of 1.55mm. Pennies dated after 1982 are made of 97.5% zinc and 2.5% copper and weigh 2.5 grams. They have a diameter of 19.05mm and a thickness of 1.52mm.
Therefore, the main difference between the two groups is their composition, weight, and thickness. The pennies dated before 1982 are larger, heavier, and thicker than those dated after 1982.
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