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question #2. chemistry 100 2) Calculate the number of moles contained in: a) 13.5g of H2O : b) 17.8g of NO2: c) 21.6g of NiS2

question #2. chemistry 100

2) Calculate the number of moles contained in: a) 13.5g of H2O : b) 17.8g of NO2: c) 21.6g of NiS2

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