che 121 wa 3 - Written Assignment 3 Mass Relationships for Compounds Answer all assigned questions and problems and show all work 1 How many atoms are

che 121 wa 3 - Written Assignment 3 Mass Relationships for...

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Written Assignment 3: Mass Relationships for Compounds Answer all assigned questions and problems, and show all work. 1.How many atoms are there in 5.10 moles of sulfur (S)? (6 points) 2.How many moles of calcium (Ca) atoms are there in 77.4 g of Ca? (6 points) 3.What is the mass in grams of 1.00 × 1012lead (Pb) atoms? (8 points) 4.Describe how you would determine the isotopic abundance of an element from its mass spectrum. (6 points) 5. Cinnamic alcohol is used mainly in perfumery, particularly in soaps and cosmetics. Its molecular formula is C 9 H 10 O.
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