Mr (CH3COONa) = 12+1*3+12+16+16+23 = 82г/моль
w(C) = 24/82 *100% = 29,3%
w(H) = 3/82 *100% = 3,7%
w(O) = 32/82 *100% = 39%
w(Na) = 100%-39%-3,7%-29,3% = 28%
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Mr (CH3COONa) = 12+1*3+12+16+16+23 = 82г/моль
w(C) = 24/82 *100% = 29,3%
w(H) = 3/82 *100% = 3,7%
w(O) = 32/82 *100% = 39%
w(Na) = 100%-39%-3,7%-29,3% = 28%