Chemistry
posted by Josh .
U+F6>UF6
If 8.4 g UF6 are recovered from 55 kg of ore, what is the weight % of uranium in the ore?
Answer in units of %

Convert 8.4g UF6 to U.
(8.4/molar mass UF6)*atomic mass U = ??
%U = (g U/mass sample)*100 = ??
Since U is in g remember to convert mass sample (55 kg) to grams, 55,000 g.