Show how you solved these problems by writing your solutions in other sheets of paper. Answers and solutions may be handwritten or typed. 1.How many zinc atoms are there in 9.20 grams of Zn(OH)2? 2. The density of silver is 10.5 g/cm2. If you were to make a necklace pendant made of 80% silver by mass,

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Chapter1: Chemical Foundations
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Show how you solved these problems by writing your solutions in other sheets of paper. Answers and solutions may be handwritten or typed.

1.How many zinc atoms are there in 9.20 grams of Zn(OH)2?

2. The density of silver is 10.5 g/cm2. If you were to make a necklace pendant made of 80% silver by mass, what is the volume of silver needed to make a 1.25-gram pendant?

3. Household ammonia is 5% ammonia by mass and has a density of 1.006 g/mL. What volume of household ammonia must you purchase to obtain 13.76 g of ammonia?

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