Question

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Answer 1

Answer:

here is your answer dear

Answer 2

Explanation:

Compound given = Na2SO4

Molecular mass of sodium sulphate = (2*23u)+32u+4*16u

= 46 u + 32u +64u = 142u

Thus, the mass percent of different elements in sodium sulphate are as follows:

Sodium = 46u/142u *100 = 32.4%

Sulphur = 32u/142u*100= 22.5%

Oxygen = 64 u/142u*100 = 45.1%

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