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, itis possible to calculate the percentage of water. Formula Mass of CuSO, Formula Mass of H,OFind the formula mass of each portion of the Cu = 64 x 1 = 64compound separately. Add them together to get S = 32 x 1 = 32the mass of the compound. Then multiply the 0 = 16 x 4 = 64mass of the water by 100, and divide theproduct by the formula mass of the compound.See the Sample Problem to the right.H = 1 x 2 = 2O = 16 x 1 = 1618160Mass of Water: 5 x 18 = 90 TOTAL: 160 + 90 =250Percentage%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.

We need to determine the percentage of water in CaCl2 . 10 H2 O .

Answered: 7. Calculate the percentage of water in…

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

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter3: Mass Relations In Chemistry; Stoichiometry

Section: Chapter Questions

Problem 32QAP: Hexachlorophene, a compound made up of atoms of carbon, hydrogen, chlorine, and oxygen, is an...

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Question

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.

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