Solve the following problem. Concentration of Solution
1. What is the % by mass of a salt solution prepared by dissolving 15 grams of salt in 120 grams of solution?
2. What is the % by volume of a solution containing 20ml of alcohol and 140ml of water?
3. A solution of gases contains 25g Oxygen, 50g Helium, and 50g Nitrogen. What is the percentage by mass composition of the solution?
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1. What is the % by mass of a salt solution prepared by dissolving 15 grams of salt in 120 grams of solution?
2. What is the % by volume of a solution containing 20ml of alcohol and 140ml of water?
3. A solution of gases contains 25g Oxygen, 50g Helium, and 50g Nitrogen. What is the percentage by mass composition of the solution?
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Answer:
1. 1,800
2. 140ml / 100ml x 20 ml = 28.
3. 70
Explanation:
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