Question

calculate the mass persent of the difference element present sodiam salphate Na= 23.S= 32.O= 16
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Answer 1

Explanation:

Molar mass of Na2 SO4 = 23×2+32+4×16=142

Na= 23×2/142 ×100=32.4%

S= 32/142 ×100=22.5%

O= 64/142×100=45%