Answer:
D.) the density changed
Explanation:
This would be the answer because it is a specific amount of Nitrogen undergoing a physical change. Since the color and boiling point don't influence a change in volume, those are ruled out. Also, nitrogen's molecular mass never changes, so that would not make sense either. But if the density, which is mass/volume, has changed (more specifically decreases) then it means the volume has increased.
Hope this helps.
The answer is acidic.
pH < 7 = acidic
pH > 7 base
Answer: higher b. Among compounds of approximately the same molar mass, those with greater polarities tend to have Wiesenthal of vaporization that are (higher, lower.
Explanation: Molecules in a gas are far apart. They are mulct"\ closer together in a liquid. Molecules in a gas are easily squeezed closer together as the gas is compressed and walls more frequently than before and with a greater force per impact.
