Question

What is the approximate mass of one mole of oxygen gas (O2)?

a. 8 g
b. 16 g
c. 32 g
d. 1.204 × 1024

Answer 1

The correct answer is B.

1 mol O2 x 15.999 O2/ 1 mol O2 = 15.999 O2

16 O2 when rounded.