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Published byAleesha Stephens Modified over 5 years ago

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Using Molar Mass as a Conversion Factor

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A molar mass is the mass in grams of one mole of a substance. One mole of any substance contains Avogadro’s number of particles. 6.022 x 10 23 particles. Calculated by adding together the masses of all of the individual atoms in a chemical formula. Units are grams per mole (g/mol). Example – KClO 3 K = 39.10g x 1 atom= 39.10g Cl =35.45g x 1 atom= 35.45g O =16.00g x 3 atoms = 48.00g 39.10 + 35.45 + 48.00 = 122.55 g KClO 3

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Complete practice problems. Solutions: H 2 SO 4 = 98.09 g Ca(NO 3 ) 2 = 164.10 g PO 4 3- = 94.97 g MgCl 2 = 95.21 g Na 2 SO 3 = 126.06 g HClO 3 = 84.46 g MnO 4 - = 118.94 g C 2 H 6 O = 46.08 g

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