posted by Lacey on .
14 carat gold has a purity of 58.3%. How
many moles of gold are in 172 grams of 14
Answer in units of moles
g Au = 172 x 0.583 = ?
Then mols = grams/atomic mass
I got 100.276. Do i divide that by 172?
No, mols = grams/atomic mass Au.
100.276/196.966 = ?
Watch the number of significant digits; especially if your prof is picky about that OR if you are typing these answers into a database.