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posted by Madison on Sunday, September 29, 2013 at 1:21pm.
How many potassium atoms in 7.50g of potassium chromate?
mols K2CrO4 = grams/molar mass = ? # mols K atoms/molecule = 2x that. Then 1 mol conains 6.02E23 atoms. You have x atom, so .......
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