B. The average kinetic energy decreases
When water vapor cools, it condenses. It is a phase change where water changes from a gas to a liquid. Condensation is the opposite of evaporation. In the atmosphere, moisture condenses to form clouds at higher levels. When it condenses near the surface, fog forms.
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Cl₂
Explanation:
The gas with the highest molecular mass will be considered the heaviest of all of them.
To solve this problem, we must calculate the molecular mass of the given gases;
O₂ CH₄ CO₂ and Cl₂
O₂ molecular mass = 15.9998 x 2 = 32g/mol
CH₄ = 12 + 4(1) = 16g/mol
CO₂ = 12 + 2(16) = 44g/mol
Cl₂ = 2(35.5) = 71g/mol
The heaviest of the gases given is Cl₂ because it has the highest molar mass compared to other gases.
learn more:
Gases brainly.com/question/10897667
Molar mass brainly.com/question/2861244
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Hey there!
A phase change is an example of a physical change.
This is because no new substance is formed. Physical changes affect the form of a substance, and can usually be reversed.
In a chemical change, the substance is changed and one or more new substances are formed.
Hope this helps!
Answer:
1.0 something depending on your periodic table.
Explanation:
You are given atoms. Not molecules. The mass is what you would read from the periodic table. 1.000 in some form is the answer.
In nature, Hydrogen is found as H2 everywhere except in the sun or a star. The molecular mass (not the atomic mass) would be 2.000 something.