How many grams of perchloric acid, HClO4, are contained in 31.3 g of 72.7 wt% aqueous...

Question

Question

How many grams of perchloric acid, HClO4, are contained in 31.3 g of 72.7 wt% aqueous perchloric acid?

How many grams of water are in the same solution?

Answer 1

Answer #1

mass of solution = 31.3 g

weight % = 72.7 %

weight % = (weight of solute / weight of solution ) x 100

72.7 = (weight of solute / 31.3) x 100

weight of solute = 22.8 g

mass of perchloric acid = 22.8 g

mass of water = 31.3 - 22.8 = 8.54 g

mass of water = 8.54 g

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Answer 2

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