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krek1111 [17]
3 years ago
5

What is the percent by mass of water in Na2SOa 10H20?total mass of element in compoundUse%Elementx 100molar mass of compoundO 5.

59%O 11.26%44.08%O 55.92%

Chemistry
1 answer:
wlad13 [49]3 years ago
6 0
Molar mass Na₂SO₄. 10H₂O = 322.19 g/mol

Molar mass  H₂O = 18.0

% Element =  molar mass / total mass x 100

% Element = 18 / 322,19 x 100 

% Element =  5.59 %

Answer A

hope this helps!

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Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for dental and orthopedic use, can be
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Answer:

P_4_{(I)}+5O_2_{(g)}+6H_2O_{(l)}\rightarrow +4H_3PO_4_{(l)}

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The first step is:

P_4_{(I)}+5O_2_{(g)}\rightarrow 2P_2O_5_{(g)}

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P_4_{(I)}+5O_2_{(g)}+2P_2O_5_{(g)}+6H_2O_{(l)}\rightarrow 2P_2O_5_{(g)}+4H_3PO_4_{(l)}

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Explanation:

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