CHEMISTRY WORKSHEET # 2 MOLE PROBLEMS—THE MOLE …
2.50 moles of aluminum hydroxide _____ Al(OH)3 = 27 + (3 x 16) + (3 x 1) = 78 g/mol. 2.50mol x 78 g = 195 g. 1 mol. b. 0.0125 moles of dinitrogen pentoxide _____ N2O5 = (2 x 14) + (5 x 16) = 108 g/mol. 0.0125mol x 108 g = 1.35 g. 1 mol. c. 3.12 x 1021 formula units of iron (III) sulfide _____ ... ................
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