If 6.50 g of the unknown compound contained 0.217 mol of C and 0.433 mol of H, how many moles of oxygen, O, were in the sample?

Question

Richard

Chemistry

6 September, 19:15

If 6.50 g of the unknown compound contained 0.217 mol of C and 0.433 mol of H, how many moles of oxygen, O, were in the sample?

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Answers (1)

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Kiara Acosta · Answer 1

First, you should find the mass of carbon and hydrogen in the 6.5g of the unknown compound.

mass of carbon and hydrogen in the compound

= (0.217*12) + (0.433*1)

=3.037g

mass of oxygen in the compound

=6.5-3.037

=3.463g

no of mol of oxygen

=3.463:16

=0.216 mol