Convert 26.02 x 1023 molecules of C2H8 to grams. Round your answer to the hundredths place.

x = 138.24 g

Explanation:

We use the avogradro's number

6.023 x 10^23 molecules - > 1 mol C2H8

26.02 x 10^23 molecules - > x

x = (26.02 x 10^23 molecules * 1 mol C2H8) / 6.023 x 10^23 molecules

x = 4.32 mol C2H8

1 mol C2H8 - > 32 g

4.32 mol C2H8 - > x

x = (4.32 mol C2H8 * 32 g) / 1 mol C2H8

x = 138.24 g