Asked by Anna

how many moles are in 25.0 grams of potassium?
Answered by GanonTEK
1 mol Potassium = 39g [Atomic Mass of K]
x mol Potassium = 25g

x = 25*1/39 = 0.641 mol

Hope that helps.
Answered by DrBob222
I would remove the 1 and make the answer 0.64 since there are only two significant figures in 25 and 39.
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