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aev [14]
3 years ago
12

What is the percent by mass of oxygen?

Chemistry
1 answer:
Colt1911 [192]3 years ago
3 0

Answer:

For oxygen: mass % O = (mass of 1 mol of oxygen/mass of 1 mol of CO2) x 100. mass % O = (32.00 g / 44.01 g) x 100. mass % O = 72.71 %

Explanation:

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<h3>How to calculate number of moles?</h3>

The number of moles in the formula units of a substance is calculated by dividing the formula unit by Avogadro's number.

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