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The mass of evaporating dish is 40.8 g; The mass of evaporating and unknown mixture is 43.8g; The mass of evaporating dish af
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Answer #1

mass of evaporating dish = 40.8 g

mass of unknown mixture = 43.8 - 40.8 = 3.00 g

mass of NH4Cl = 43.8 - 42.4 = 1.4 g

mass % of NH4Cl = (1.4 / 3.00) x 100

                             = 46.67 %

Answer : 46.67 %

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