Question

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Answer 1

Answer:

22.4g

Explanation:

The molar mass of Na  

2

​  

SO  

4

​  

.10H  

2

​  

O is

2(23)+32+4(16)+10(18)=322 g/mol.

1 mole of Na  

2

​  

SO  

4

​  

.10H  

2

​  

O contains 14 moles of O atoms.

1 mole of Na  

2

​  

SO  

4

​  

.10H  

2

​  

O corresponds to 14×16=224 g of O.

Amount of oxygen in 32.2g of Na  

2

​  

SO  

4

​  

.10H  

2

​  

O is 32.2×224322=22.4 g