19885_chem 111 Exam I

19885_chem 111 Exam I - CHEM 111 summer I 2008 Exam I Amato...

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CHEM 111 summer I 2008 Exam I Amato 1. "A 33 g sample of red liquid at its freezing point of 260 K had a density of 0.926 g/mL." Which of the properties given in the previous statement is not intensive? 1. 33 g 2. red 3. freezing point 4. 260 K 5. 0.926 g/mL 2. Which of the following is not a chemical change? 1. iron rusting 2. leaves changing color in the fall 3. liquid water evaporating 4. beef cooking 5. burning a candle 3. Which element listed below is a member of the alkaline earth metal family? 1. Br 2. Ca 3. K 4. S 5. none of these 4. Three problems are worked below. Choose the answer that properly describes the correct use of significant digits. (a) 0.34 (b) 14.3 (c) 14.21 +14.2 × 2.0 × 134 14.54 28.6 1.90 × 10 3 1. a and b are correct, c is incorrect 2. a and c are correct, b is incorrect 3. b and c are correct, a is incorrect 4. only c is correct
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5. none of these 5. Express a mass of 1.250 mL in L. 1) 125.0 L
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This note was uploaded on 12/10/2009 for the course CHEM 1111 at Colorado.

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19885_chem 111 Exam I - CHEM 111 summer I 2008 Exam I Amato...

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