SampleExam 1 - Exam 1 Chem 111 Feb 10 2010 Dr Reger Copy A...

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Exam 1 Chem 111 Feb. 10, 2010 Dr. Reger Copy A Place the last 5 numbers of your SS# on the bubble sheet, right justified. Place your name on the bluebook 1. The symbol for the species that contains 28 protons, 30 neutrons, and 26 electrons is: 1. 30 Ni 2+ 2. 58 Ni 2- 3. 56 Ni 2- 4. 58 Ni 2+ 5. none of these 2. What is the molecular mass (to three significant figures) of C 12 H 10 O? 1. 170 u 2. 150 u 3. 190 u 4. 210 u 5. none of these 3. The correct formula of the ionic compound made from calcium ions and polyatomic nitrate ions is: 1. CaN 2 O 5 2. CaNO 3 3. Ca(NO 3 ) 2 4. Ca 2 NO 2 5. none of these 4. How many moles of sodium chloride are present in 5.85 grams of NaCl? 1. 0.100 mole 2. 10 mole 3. 341mole 4. 5.84 mole 5. none of these 5. How many grams of oxygen, O, are present in 20.0 g of CO 2 ? 1. 7.27 g O 2. 55.0 g O 3. 14.5 g O 4. 27.5 g O 5. 3.64 g O 6. What is the percentage of carbon (to two significant figures) in C 2 H 6 O 2 ? 1. 31%
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SampleExam 1 - Exam 1 Chem 111 Feb 10 2010 Dr Reger Copy A...

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