October 8, 2015

Homework Help: Check a chemistry answer

Posted by Tim on Thursday, October 14, 2010 at 10:00pm.

So I think I have done this problem right, I was just wondering if anyone would check over it for me.

What mass (in grams) of P2O5 contains 1.20 x 1023 atoms of phosphorus?

1.20E23 atoms of P x (1 mol/ 6.022E23 atoms) x (5 mol O/ 2 mol P) x (1 mol P2O5/ 5 mol O) x (79.995g/ 1 mol P2O5) =

7.97g of P2O5

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