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Section 7.3 The Molar Mass of Compounds
Calculate the molar mass for each of the following compounds (show work and units!):
1.zinc oxide, ZnO
2.magnesium chloride, MgCl2
3.water, H2O
4.carbon dioxide, CO2
5.ammonia, NH3
6.sodium hypochlorite, NaClO
7.nitric acid, HNO3
8.magnesium chlorite, Mg(ClO3)2
9.calcium nitrate, Ca(NO3)2
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10.silver oxide, Ag2O
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Make the following conversions, using proper dimensional analysis, sig figs, units…and
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your answers!
11.Find the mass of 0.89 mol CaCl2
12.How many moles of PbSO4 are in 158.1 grams?
13.Find the mass of 1.112 mol of HF.
14.Determine the number of moles of C5H12 that are in 362.8 grams.
15.Find the mass of 0.159 mol of SiO2 .
16.How many moles of C4H8O2 are in 12.35 grams?
17.Find the mass of 3.66 mol of N2 .
18.A bottle contains 663.8 g of KMnO4. How many moles of KMnO4 does it contain?