Chapter 1 2 and 3 sample exam practice

Chapter 1 2 and 3 sample exam practice - PRACTICE for EXAM...

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PRACTICE for EXAM I 1. Balance the following reactions: (10pts) (a) (b) 2. The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet ® , is C 14 H 18 N 2 O 5 . 1000mg = 1g (20pts) (a) What is the molar mass of aspartame? (b) How many moles of aspartame are present in 1.00 mg of aspartame? (c) How many molecules of aspartame are present in 1.00 mg of aspartame? (d) How many hydrogen atoms are present in 1.00 mg of aspartame? (e) What is the % C by mass in aspartame?
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3. Titanium metal can be obtained from its oxide according to the following equation: (15pts) TiO 2 (s) + 2C(s) Ti(s) + 2CO(g) If 28.6 g of Carbon is allowed to react with 88.2 g of TiO 2 , answer the following. a. What is the Limiting reagent in the above reaction? b. What is the Theoretical yield of Ti? c. If 48.2 g of Ti is produced by the reaction, what is the percent yield of Ti? 4. The following reaction is used to obtain iron from iron ore: (12pts) Fe 2 O 3 + 3CO 2Fe + 3CO 2 a. What is the limiting
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This note was uploaded on 09/08/2010 for the course CHEMISTRY 151 taught by Professor Wikrent,pollyanna during the Spring '10 term at Pima CC.

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Chapter 1 2 and 3 sample exam practice - PRACTICE for EXAM...

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