What is the mole percentage of NaCl in the solution when 13.8g of NaCl is mixed in 123ml of water?
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Answer:1. What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of
ethanol, C2H5OH, in 53.6 g of water?
Ethanol 46 g/mol
Water 18 g/mol
Calculate moles of ethanol: 14.6 grams x 1 mol / 46 grams = 0.317 moles
Calculate moles of water: 53.6 grams x 1 mol / 18 grams = 2.98 moles
Mole fraction = moles of component / total moles in solution
= 0.317 / (0.317 + 2.98) = 0.0963
Explanation: hi
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