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Unformatted text preview: Page 1 of 7 ExamI Format A Instructor: Vahid Eskandari Chemistry 110 (Fall 2010) Midterm Nov 10 th 2010 (2.5 pts each question) Exam Format A 1. Which of the following IS NOT a particulate sample of matter? a. An oxygen molecule b. A human egg cell c. An electron d. A nickel atom e. A hemoglobin molecule 2. Which of the following DOES NOT describe the liquid state? a. Easily compressed b. Same shape as the bottom of the container c. Constant volume d. Pourable e. All describe the liquid state 3. What type of pure substance can be decomposed chemically into other pure substances? a. A compound b. An element c. A mixture d. A solution e. Heterogeneous matter 4. Which of the following statements is false ? a. Both elements and compounds are pure substances b. The properties of a compound vary c. An element cannot be decomposed chemically into other pure substances d. A compound can be separated into other substances by chemical means e. All of the above are true; none is false 5. Which of the following numbers are correctly expressed in ordinary decimal form? i. 6.21 × 10 5 = 621,000 ii. 7.28 × 10 6 = 0.00000728 iii. 9.03 × 10-4 = 0.000903 iv. 1.12 × 10-3 = 1120 a. i and ii b. i and iii c. ii and iv d. iii and iv e. All are incorrect Page 2 of 7 ExamI Format A 6. Complete the following operation: 9.370 × 10-5- 2.25 × 10-6 a. 7.12 × 10 1 b. 7.12 × 10-11 c.-9.145 × 10-5 d. 9.145 × 10-5 e. 9.145 × 10-4 6. How many fluid ounces are in a 2.5 gallon container? By definition, there are 4 qt/gal and 32 fl oz/qt. a. 0.0031 fl oz b. 0.31 fl oz c. 0.020 fl oz d. 20 fl oz e. 320 fl oz 7. What is the volume of 0.022 Kg of gold, which has a density of 19.3 g/cm 3 ? a. 21 cm 3 b. 3 cm 3 c. 1.1 cm 3 d. 0.88 cm 3 e. 1.1 × 10-3 cm 3 9. A gas storage tank holds a gas at 5.73 atm pressure at 22 ° C. What will the pressure of the gas be when the temperature is lowered to 0 ° C? a. 5.30 atm b. 6.19 atm c. 0.189 atm d. 0 atm e. The temperature of a gas at 0 ° C is undefined 10. A fixed quantity of a gas is maintained at constant pressure as the volume decreases from 1.75 L to 1.25 L. If the temperature was 57 ° C at the larger volume, what is the temperature at the smaller volume?...
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This note was uploaded on 12/07/2010 for the course WLD41C 020 taught by Professor Eskandari during the Fall '10 term at UC Davis.
- Fall '10