Comparing Molecules of Water in Ice and Liquid Form

Which contains more molecules of water, 4.55 cm3 of ice (0.917 g/cm3 ) at 0◦C or 4.55 cm3 of liquid water at 0◦C?

1. the ice

2. the liquid

How many more molecules?

Answer in units of molec.

I know it's the liquid water, but how do I find how many more molecules there are?

I did:

m/v=d for ice and liquid water

Ice mass = 0.917 * 5 = 4.585

Liquid water mass = 0.9998 * 5 = 4.995

Then subtracted 4.995 - 4.585 = 0.41 and converted g to mol = 0.02277 * 6.022x10^23 = 1.3716E22 but it's wrong!!

My Explanation: As for me, I think the ice and the liquid will have the same number of molecules. They are the same substance but with different phases and according to the law of conservation of mass, mass cannot be created, so they should have the same number of molecules. Hope this answers the question.

Answer:

The answer was A on edunity.

Explanation:

Ice and liquid water will have the same number of molecules due to the conservation of mass principle.

Which contains more molecules of water, 4.55 cm3 of ice (0.917 g/cm3 ) at 0◦C or 4.55 cm3 of liquid water at 0◦C?

The same number of molecules for both ice and liquid water.