Question

how many moles of o2 are there in 1.20*10to the power 22 oxygen molecules.

Answer 1

1 mol = 6.0 × 10²³ molecules

1 = 1 mol / (6.0 × 10²³ molecules)

So, multiplying a number with [1 mol / (6.022 × 10²³ molecules)] is equivalent to multiplying the number with 1

1.20 × 10²² molecules × 1 mol / (6.0 × 10²³ molecules)
= 0.02 mol

∴ There are 0.02 mol of oxygen molecules in 1.2 × 10²² molecules

Answer 2

Explanation:

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