# Chemistry

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the number of moles of O2 needed to produce 14.2g of P4O10 from P?

• Chemistry -

How many moles of P4O10 is in 14.2 grams?

Of that, wouldnt 10/14 of that be O, and 5/14 of that O2?

Check my thinking.

• Chemistry -

there is .05 moles of P4O10 in 4.2 g, so then there will be 5/14 of O2, right? but wouldn't the ratio be 5 to 2? I'm confused :(

• Chemistry -

No the ratio of O2 to P is 5:4 Balance the reaction equation of P and O2 to verify.

• Chemistry -

so the answer would be .0625 mol of O2, right?

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