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1. What is the percent by mass of a salt solution by dissolving 15g of salt in 80g of solution
2. A solution contains 40mL of ethanol in 250mL alcohol of solution. What is the percent by volume concentration of the solution?
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Answer:
1.) the percentage mass of salt in the solution= 11×100%/80
=13.75%
2.) Concentration= Volume of salute/ Volume of solution= 40/140×100
=28.59%
Explanation:
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