If you had a cup full of methanol and a pool full of methanol do you think they would have the same density or different density?

same density

Explanation:

The amount of methanol is a quantitative characteristic, and by the other side the density of methanol is a qualitative characteristic. What I mean is that the amount of methanol is not related to the density; it would be the same density no matter how much methanol you have.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.