Asked by Samba mambo
What is the percentage of mass of A. Phosphorus in Ca3(PO4)2 B. Nitrogen in (NH4)3PO4?
Answers
Answered by
DrBob222
Phosphorus in Ca3(PO4)2
Let's do this by common sense. If I gave you a basket containing 5 pounds of apples and 5 pounds of oranges and asked you to calculate percent apples and oranges I know you would say, "That's easy. It's 50% each, of course." And of course you would be right. BUT, how did you calculate that?
You said I have 5 pou
nds apples in a total of 10 pounds for both so (5 pounds apples/10 total) *100 = 50%. Chemicals don't make it any different so treat it the same way. For part A, it is (mass P/total mass)*100 = % P
[(2*atomic mass P)/(total mass Ca3(PO4)2]*100 = ?
Part B is worked the same way.
Let's do this by common sense. If I gave you a basket containing 5 pounds of apples and 5 pounds of oranges and asked you to calculate percent apples and oranges I know you would say, "That's easy. It's 50% each, of course." And of course you would be right. BUT, how did you calculate that?
You said I have 5 pou
nds apples in a total of 10 pounds for both so (5 pounds apples/10 total) *100 = 50%. Chemicals don't make it any different so treat it the same way. For part A, it is (mass P/total mass)*100 = % P
[(2*atomic mass P)/(total mass Ca3(PO4)2]*100 = ?
Part B is worked the same way.
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