We know that one mole of oxygen gas contains two moles of o atoms (remember that o is a diatomic element in nature and is written o2). if we have a sample of o2 that contains 1. x 10-20 mol, we will have (blank)
atoms of o in the sample.

12.4 × 10∧3 atoms

Explanation:

Given data:

moles of oxygen molecule= 1.0000 x 10-20 mol

atoms =?

Solution:

32 g O2 = 1 mol = 6.02 × 10∧23

1.0000 x 10∧-20 mol × 6.02 × 10∧23 × 2 = 12.4 × 10∧3 atoms

the answer is either b or c

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