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3 years ago

What is the percentage of water in hydrated calcium chloride

Chemistry

2 answers:

earnstyle [38]3 years ago

8 0

Answer:

24.5%

Explanation:

You just add up the atomic masses.

Ca - 40.078

Cl2 - 35.4527 x 2 = 70.9054

------ 110.9834

H4 - 1.00794 x 4 = 4.03176

O2 - 31.9998

------ 36.03056

TOTAL - 147.01396

So the water is 36.03056/147.01396 = .245082576 but that is only accurate to three decimals (because the mass of Ca was only given to three decimals) so we write .245 and that is 24.5%

This is not my answer but I found it on Yahoo answers and it was answered by Anonymous.

oee [108]3 years ago

8 0

Answer: 24.5%

Explanation: Molar mass of CaCl2 * 2 H2O = 40.078 + ( 2 x 35.453) + ( 2 x 18.02)=147.024 g/mol

% H2O = 2 x 18.02 x 100/ 147.024 =24.5

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Answer:

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Explanation:

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$1.00atm\times 1.2L=n_{air}\times 0.0821\text{ L atm }mol^{-1}K^{-1}\times 310K\\n_{air}=\frac{1.00\times 1.2}{0.0821\times 310}=0.047mol$

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For b:

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2 years ago

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Explanation:

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3 years ago

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frutty [35]

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This makes sense because UV light exists roughly

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Answer:

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1 year ago

What is the percentage of water in hydrated calcium chloride​

What is the percentage of water in hydrated calcium chloride