Colton has an ice cube that has a mass of 4 grams. he places it in a sealed container and then puts it in the microwave on high. the ice cube melts after a few seconds. he removes the sealed container with the melted ice cube and checks the mass again. which sentence best describes what colton discovers? a) the mass of the melted ice cube was less than 4 grams. b) the mass of the melted ice cube was more than 4 grams. c) the mass of the melted ice cube could not be determined. d) the mass of the melted ice cube remained the same at 4 grams.

I believe the answer is D.

The reason is because mass cannot be destroyed. All the mass can really do is become more of less dense.  

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.