Answer:

Explanation:
We want to find the density. The formula is mass over volume.

The mass is 500 kilograms. The volume is 0.026 cubic meters.

Substitute the values into the formula.

Divide.

This is just about equal to 19,320 kg/m³, so choice A is correct.
40 grams ÷ 40.08 grams/moles = 1 mole
I believe the answer is C !
B. False, have a connection between chemistry and physis
this is the answer is
Zn<span> + </span>HCl<span> = </span>ZnCl2<span> + </span>H2 <span> </span>