"Calculate how many moles of Uranium are found in 100.0 g of carnotite, K2(UO2)2(VO4)2*3H20.
MW Carnotite = 902.14 g/mol, MW Uranium = 476.06
I understand that to go from g > moles you divide by molecular weight (476.06). When I do, 100.0g/902.14 = .1108475403...what do I do about sig figs here? 1 x10e-1?
If that's right, I'm so confused on how to isolate the # of moles of Uranium now.
The professor wants us to convert the found # of moles > grams, as well.
Thanks for help in advance!
Thank you for the opportunity to help you with your question!
moles of carnonite = moles of U2
moles of carnonite = 100g/902.14 = 0.11085 ( to 5 significant figures
moles of U2 = 0.11085 moles
MW of U2 = 476.06
mass of uranium (U2) = 476.06 *0.11085 = 52.77g
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