Practice Mass Percentage (w/w) (2.3.1) - Chapter 2: Solutions

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6 sample questions

Question 1.
Calculate the mass percentage of 20g of solute in a solution of 80g.
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Remember to sum the masses of solute and solvent.
Question 2.
What is the mass percentage of a solution with 15g of solute in 85g of solvent?
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Use the mass percentage formula.
3Question 3.
What is the formula for calculating mass percentage?
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Think about how you find the percentage of any part in a whole.
4Question 4.
True or False: Mass percentage can help in determining concentrations in cooking.
- True
- False
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Consider where exact measurements are crucial.
Question 5.
A chemist prepares a solution by dissolving 200g of potassium chloride in 800g of water. Calculate the mass percentage of potassium chloride in this solution.
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Sum the masses correctly before applying the formula.
Question 6.
In a precipitation reaction, a scientist collects 50g of lead(II) nitrate dissolved in 450g of water. What is the mass percentage of lead(II) nitrate in the solution?
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Remember to include all parts when calculating total mass.

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