1.)you want to prepare a disinfectant to be used at home in order to prepare unit 100 g of chlorine powder and 500 g of water find the percent by mass of water in
2.)suppose you want to repair a home made vinegar you need 36 ml acetic acid and 220 ml of water it is the percentage by volume of water
3.)how much gold is needed to make 14 karat necklace weighing 50 grams
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Answer:
1. 16.66%
2. 14.22%
3. 28%
Explanation:
1. Given: 100 g of solute
500 g of solvent
600 g of solution
Unknown: % by mass
Formula: mass percent = (mass of solute÷mass of solution) x 100.
Solution: 100 ÷ 600 x 100
Answer: 16.66%
2. Given: 36 mL of solute
220 of solvent
253 of solution
Unknown: % by volume
Formula: v/v % = [(volume of solute)/(volume of solution)] x 100%
Solution: 36 ÷ 253 x 100
Answer: 14.22%
3. Since 14 is the solute and 50 is the solution we need to use the formula, mass percent = (mass of solute÷mass of solution) x 100. Therefore the answer is 28%.