Exam 1 Form C Key fall 07CHEM103A Dr. Keller

Exam 1 Form C Key fall 07CHEM103A Dr. Keller - Chemistry...

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Chemistry 103A Exam 1 Form C Answer Key 1. (2) The chemical symbol for copper(II) ion is (a) 2Co + (b) Co +2 (c) Cu 2 + (d) 2Cu + (e) Cu 2+ 2. (2) The name of the ionic compound Ca 3 P 2 is (a) calcium biphosphorus (b) calcium potassium (c) tricalcium diphosphide (d) calcium phosphide (e) Ralph 3. (2) Find the mass in grams os 8.00 x 10 24 methane (CH 4 ) molecules. (a) 213 g (b) 18.0 g (c) 9.6 x 10 24 g (d) 48.0 g (e) 69.7 g 4. (2) Which of the following compounds is ionic ? (a) CS 2 (b) SO 2 (c) SF 2 (d) CaCl 2 (e) NaK 2 5. (2) Which of the following compounds is molecular (covalent) (a) CuSn 4 (b) C 2 F 6 (c) Na 4 Si (d) CaS (e) K 3 N 6. (2) The balanced equation for the combustion of two moles of C 9 H 10 requires (a) 9 CO 2 (b) 10 O 2 (c) 24 CO 2 (d) 23 O 2 (e) 15 O 2
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7. (2) The balanced equation for the combustion of one mole of C 10 H 16 requires (a) 16 H 2 O (b) 20 CO 2 (c) 8 H 2 O (d) 16 O 2 (e) 10 H 2 O 8. (2) A molecular formula (a) is a procedure for making a molecule (b) gives the number of molecules in a mole of a molecular compound (c) is a diagram
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This test prep was uploaded on 04/14/2008 for the course CHEM 103a taught by Professor Weso during the Fall '08 term at Arizona.

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Exam 1 Form C Key fall 07CHEM103A Dr. Keller - Chemistry...

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