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My Notes How many grams of perchloric acid, HClO4, are contained in 39.1 g of 74.9 wt% aqueous perchloric acid? How many grams of water are in the same solution?
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My Notes How many grams of perchloric acid, HClO4, are contained in 39.1 g of 74.9 wt% aqueous perchloric acid?

How many grams of water are in the same solution?

User Ashish Mohan
by
6.1k points

1 Answer

3 votes

Answer:

a)29.9 b) 9.81

Step-by-step explanation:

Wt% = mass of solute / mass of solvent × 100

0.749 = mass of solute / mass of solvent

a) Mass of perchloric acid = 0.749 × 39.1 = 29.29

b) Mass of water = 39.1 - 29.29 = 9.81

User Grant Wilkinson
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