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:1qt0.946 L1 mile1.609 km4 qt1 gal1 ft12 in3. The number of significant figures in 0.090900 * 10^-4 is4. 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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Answered: 1. A 7.45 g sample of calcium carbonate…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory 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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