Transcription of Mole Calculation Worksheet
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Mole Calculation Worksheet
Name_____ Date_____ Per_____ Mole to Grams, Grams to Moles Conversions Worksheet What are the molecular weights of the following compounds? (all masses must be to nearest hundredth) 1) NaOH 2) H3PO4 3) H2O 4) Mn2Se7 5) MgCl2 6) (NH4)2SO4 There are three definitions (equalities) of mole. They are: 1 mole = x 1023 particles 1 mole = molar mass (could be atomic mass from periodic table or molecular mass) 1 mole = L of a gas at STP (You do not need to worry about this yet) Each definition can be written as a set of two conversion factors. They are: 1 mole = molar mass(g) can be written as ____1 mole OR _molar mass (g) molar mass (g) 1 mole 1 mole = x 1023 particles can be written as ____1 mole OR x 1023_ x 1023 1 mole S
363.891 grams = 360 g 14) How many moles are in 1.2 x 103 grams of ammonia, NH 3? 70.5882 moles = 71 moles 15) How many grams are in 2.3 x 10-4 moles of calcium phosphate, Ca 3 (PO 3) 2? 0.06398 g = 0.064 g 16) How many moles are in 3.4 x 10-7 grams of silicon dioxide, SiO 2? 5.6582 x 10 9 mol = 5.7 x 10-9 mol
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