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WAEC Chemistry 2015 Paper

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Question : 21

Total: 50

The number of oxygen molecules present in 16.0g of the gas is ______?
[Avogadro's number = 6.02 x 10²³]

6.02 x 10²²
6.02 x 10²³
3.01 x 10²³
1.51 x 10²³

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