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sierrastrickland99
10.10.2021 •
Chemistry
Giải phương trình PO3+H2O ?
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Ответ:
Explanation:
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Ответ:
Explanation:
Question 3:
Mass of anhydrous compound = 7.26g
Mass of water = 8.50 - 7.26 = 1.24 g
Percentage of water of crystallization in the compound is = (1.24 / 8.50) * 100 = 14.59%
The mass ratio of Na2CO3 : H2O = 7.26 : 1.24
Using mole = mass / molar mass;
The mole ratio of Na2CO3 : H2O = 7.26 /105.99 : 1.24 / 18 = 0.069 : 0.069 or 1 : 1
The formular is; Na2CO3.H2O
Question 4:
Mass of anhydrous compound = 48.23 g
Mass of water = 60.98 - 48.23 = 12.75 g
Percentage of water of crystallization in the compound is = (12.75 / 60.98) * 100 = 20.91%
The mass ratio of CaSO4 : H2O = 48.23 : 12.75
Using mole = mass / molar mass;
The mole ratio of CaSO4 : H2O = 48.23 / 136.14 : 12.75 / 18 = 0.3543 : 0.708 which is 1 : 2
The formular is; CaSO4.2H2O