MidtermChem110F2010FormatA - Page 1 of 7 ExamI Format...

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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? 3. What type of pure substance can be decomposed chemically into other pure substances? 4. Which of the following statements 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
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Page 2 of 7 ExamI Format A 6. Complete the following operation: 9.370 × 10 -5 - 2.25 × 10 -6 6. How many fluid ounces are in a 2.5 gallon container? By definition, there are 4 qt/gal and 32 fl oz/qt. 7. What is the volume of 0.022 Kg of gold, which has a density of 19.3 g/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
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