Asked by Jena

here is the question:

A sapphire gemstone contains 52.7% aluminum, 47.% oxygen, and traces of titanium. If the saoohire was found to contain 0.155g of oxygen, what is the mass of the gemstone?

i think this is a precent unit factor but i don't know how to set it up.

PLEASE HELP ME!
Answered by DrBob222
Is that 47.0% oxygen or some other number?
If 47.0% oxygen, then we have
52.7% Al, 47.0% oxygen, and 0.3% Ti.

I set the oxygen up as
0.470 x what number = 0.155 grams
number = 0.155/0.470 = yy grams for the gemstone
Answered by Jena
thank you so very much for your help!
Answered by anthony
ammonia reacts with diatomic oxygen to form nitric oxide and water vapor:4NH3+5O2=4NO+6H2O what is the theoretical yeild of water in moles when 40 g NH3 and 50g O2 are mixed and allowed to react
Answered by Zain Areesh Momin
Considering the percentage factor might not be enough. I think the AMU(amotic mass unit) of each element also affects because all three elements in this example have different densities.
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