CH304K_PTQUIZ01 - A. a mixture B. covalent C. ionic 13. An...

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CH 304K, Spring 2005 Extra Practice Questions for Exam 1. Disclaimer: This is not an all-inclusive list of questions and topics! Make sure you study the homework, course packet questions, and your class notes! Answers at bottom. 1. If the density of an object is 1.8 g/mL, what is the volume of the object if it has a mass of 23 g? 2. Convert 32 g/in 3 to mg/mL 3. Convert 16 ft to km. 4. Convert 0.03 Mg to cg. 5. Express 280 ppb in ppm. 6. What is the main source of nitrogen oxides in the atmosphere? A. power plants B. cars C. factories D. both power plants and cars 7. A mixture of peas and carrots is a: A. homogeneous mixture B. heterogeneous mixture C. pure substance 8. Nitrogen reacts with oxygen to form nitrogen oxides. This is a ____________change. 9. What is the main component of dry air? What is the percentage by volume of this component? 10. Name SO 3 : ______________________________________________ 11. Name CaO: ______________________________________________ 12. A compound formed from a metal and nonmetal is:
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Unformatted text preview: A. a mixture B. covalent C. ionic 13. An effect of carbon monoxide exposure is: A. drowsiness B. eye irritation C. lung irritation D. none of these 14. Write a balanced chemical equation for the combustion of hexane, C 6 H 14 , assuming very limited oxygen. What is the coefficient of oxygen? 15. 20 g potassium reacts with exactly 40.9 g bromine to form potassium bromide, the only product, with no reactant left over. How many grams of potassium react with 32 grams bromine? 16. 20 g potassium reacts with exactly 40.9 g bromine to form potassium bromide, the only product, with no reactant left over. How many grams of potassium bromide could be formed from 25 grams of potassium and 51 grams of bromine? Answers: 1. 12.8 mL 2. 1.95 x 10 3 3. 4.9 x 10-3 4. 3 x 10 6 5. 2.8 x 10-1 6. D 7. B 8. chemical 9. N 2 , 78% 10. Sulfur trioxide 11. Calcium oxide 12. C 13. A 14. 13 15. 15.6 16. 75.9...
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This note was uploaded on 01/19/2010 for the course CH 53435 taught by Professor Sparks during the Fall '09 term at University of Texas.

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CH304K_PTQUIZ01 - A. a mixture B. covalent C. ionic 13. An...

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