Question

Completethe mass in grams of sample of carbon containing 68 atoms?

Answer 1

1.356x10⁻²¹ grams.

Step-by-step explanation:

mass of carbon containing 68 atoms = 12g Carbon/6.02x10²³atoms = 1.993x10⁻²³ g/atom x 68 atoms = 1.356x10⁻²¹ grams.