1. A 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon dioxide gas when heated. If 4.17 g calcium oxide is produced, what mass of carbon dioxide must have been formed? 2. A car averages 28.5 miles per gallon of gasoline. How many liters of gasoline will be needed for a trip of 415 km? Some conversion factors that may be helpful are the following: 1qt 0.946 L 1 mile 1.609 km 4 qt 1 gal 1 ft 12 in 3. The number of significant figures in 0.090900 * 10^-4 is 4. The best answer to report for 352.94 - 36.0342 is. 5. Calculate the mass of aluminum that occupies the same volume as 95.7 g of cobalt. The density of cobalt is 8.90 g/cm^3 and the density of aluminum is 2.71 g/cm^3 (ould ease show your work for all problems.)
1. A 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon dioxide gas when heated. If 4.17 g calcium oxide is produced, what mass of carbon dioxide must have been formed? 2. A car averages 28.5 miles per gallon of gasoline. How many liters of gasoline will be needed for a trip of 415 km? Some conversion factors that may be helpful are the following: 1qt 0.946 L 1 mile 1.609 km 4 qt 1 gal 1 ft 12 in 3. The number of significant figures in 0.090900 * 10^-4 is 4. The best answer to report for 352.94 - 36.0342 is. 5. Calculate the mass of aluminum that occupies the same volume as 95.7 g of cobalt. The density of cobalt is 8.90 g/cm^3 and the density of aluminum is 2.71 g/cm^3 (ould ease show your work for all problems.)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter1: Chemistry And Measurement
Section: Chapter Questions
Problem 1.95QP: When a mixture of aluminum powder and iron(III) oxide is ignited, it produces molten iron and...
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1. A 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon dioxide gas when heated. If 4.17 g calcium oxide is produced, what mass of carbon dioxide must have been formed?
2. A car averages 28.5 miles per gallon of gasoline. How many liters of gasoline will be needed for a trip of 415 km? Some conversion factors that may be helpful are the following:
| 1qt | 0.946 L |
| 1 mile | 1.609 km |
| 4 qt | 1 gal |
| 1 ft | 12 in |
3. The number of significant figures in 0.090900 * 10^-4 is
4. The best answer to report for 352.94 - 36.0342 is.
5. Calculate the mass of aluminum that occupies the same volume as 95.7 g of cobalt. The density of cobalt is 8.90 g/cm^3 and the density of aluminum is 2.71 g/cm^3
(ould ease show your work for all problems.)
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