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7. Calculate the percentage of water in the compound CaCl,•10H,0.

7. Calculate the percentage of water in the compound CaCl,•10H,0.

Chemistry
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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Question #7 please

Percentages can refer to different portions of a (Sample Problem: What is the percentage of water in CuSO,-5H;O? compound. In hydrated crystals, for example, it is possible to calculate the percentage of water. Formula Mass of CuSO, Formula Mass of H,O Find the formula mass of each portion of the Cu = 64 x 1 = 64 compound separately. Add them together to get S = 32 x 1 = 32 the mass of the compound. Then multiply the 0 = 16 x 4 = 64 mass of the water by 100, and divide the product by the formula mass of the compound. See the Sample Problem to the right. H = 1 x 2 = 2 O = 16 x 1 = 16 18 160 Mass of Water: 5 x 18 = 90 TOTAL: 160 + 90 =250 Percentage %H,O = 90 x 100 + 250 = 36 % 6. Calculate the percentage of water in the compound CaSO,•6H,O. 7. Calculate the percentage of water in the compound CaCl,•10H,0.
Transcribed Image Text:Percentages can refer to different portions of a (Sample Problem: What is the percentage of water in CuSO,-5H;O? compound. In hydrated crystals, for example, it is possible to calculate the percentage of water. Formula Mass of CuSO, Formula Mass of H,O Find the formula mass of each portion of the Cu = 64 x 1 = 64 compound separately. Add them together to get S = 32 x 1 = 32 the mass of the compound. Then multiply the 0 = 16 x 4 = 64 mass of the water by 100, and divide the product by the formula mass of the compound. See the Sample Problem to the right. H = 1 x 2 = 2 O = 16 x 1 = 16 18 160 Mass of Water: 5 x 18 = 90 TOTAL: 160 + 90 =250 Percentage %H,O = 90 x 100 + 250 = 36 % 6. Calculate the percentage of water in the compound CaSO,•6H,O. 7. Calculate the percentage of water in the compound CaCl,•10H,0.
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