Calculating the percent by mass concentration of a solution. 1. What is the percent by mass (m/m), concentration of sucrose (table sugar) in a solution made by dissolving 7.6 grams of sucrose in 83.4 grams of water? 2. What is the percent by mass (m/m), concentration of NazSO4 in a solution made by dissolving 7.6 g of Na,SO, in enough water to give 87.3 g of solution?

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Calculating the percent by mass concentration of a solution.
1. What is the percent by mass (m/m), concentration of sucrose (table sugar) in a solution
made by dissolving 7.6 grams of sucrose in 83.4 grams of water?
2. What is the percent by mass (m/m), concentration of Na2SO4 in a solution made by
dissolving 7.6 g of NazSO, in enough water to give 87.3 g of solution?
Calculating the percent by volume concentration of a solution
3. A 125 ml sample of a mouthwash contains 12 ml of ethyl alcohol. What is the percent
by volume of ethyl alcohol on the mouthwash?
4. A 25 ml of cough medicine contains 2 ml of ethyl alcohol. What is the percent by volume
concentration of ethyl alcohol in the cough medicine?
Transcribed Image Text:Calculating the percent by mass concentration of a solution. 1. What is the percent by mass (m/m), concentration of sucrose (table sugar) in a solution made by dissolving 7.6 grams of sucrose in 83.4 grams of water? 2. What is the percent by mass (m/m), concentration of Na2SO4 in a solution made by dissolving 7.6 g of NazSO, in enough water to give 87.3 g of solution? Calculating the percent by volume concentration of a solution 3. A 125 ml sample of a mouthwash contains 12 ml of ethyl alcohol. What is the percent by volume of ethyl alcohol on the mouthwash? 4. A 25 ml of cough medicine contains 2 ml of ethyl alcohol. What is the percent by volume concentration of ethyl alcohol in the cough medicine?
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