Mr(CH3COONa) = 2Ar(C) + 3Ar(H) + 2Ar(O) + Ar(Na) = 2*12 + 3*1 + 2*16 + 23 = 24 + 3 + 32 + 23 = 82.
w(C) = (2Ar(C)) : Mr(CH3COONa) = (2*12) : 82 ≈ 29,27%.
Ответ : w(C) ≈ 29,27%.
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Mr(CH3COONa) = 2Ar(C) + 3Ar(H) + 2Ar(O) + Ar(Na) = 2*12 + 3*1 + 2*16 + 23 = 24 + 3 + 32 + 23 = 82.
w(C) = (2Ar(C)) : Mr(CH3COONa) = (2*12) : 82 ≈ 29,27%.
Ответ : w(C) ≈ 29,27%.