Question

Help Pleaseee!
A laboratory has a 3.0 mol sample of pure carbon and a 3.0 mol sample of pure helium. How many more grams of carbon do they have than grams of helium?
Answer Choices:
The carbon sample would have the same mass as the helium sample.

The carbon sample would have two times the mass of the helium sample.

The carbon sample would have three times the mass of the helium sample.

The carbon sample would have six times the mass of the helium sample.

Answer 1

protons (+) and electrons (-) must be equal A

3 moles of C has a mass of 36, 3 moles of He is 12
C. the carbon mass is 3 times the He mass, answer C

Hope this will help you.

Answer 2

Thank you!

Answer 3

the pleasure is mine.