w(X) = Ar(X) * a * 100%
Mr вещ-ва
Mr(FeSO4) = 56 + 32 + 16*4 = 152
w(Fe) = 56 * 1 * 100% = 37 %
152
ответ: 37%
w(Fe)= M(Fe)/M(FeSO4) *100%
w(Fe)=56/(56+32+16*4)*100%=36.8%
w(X) = Ar(X) * a * 100%
Mr вещ-ва
Mr(FeSO4) = 56 + 32 + 16*4 = 152
w(Fe) = 56 * 1 * 100% = 37 %
152
ответ: 37%
w(Fe)= M(Fe)/M(FeSO4) *100%
w(Fe)=56/(56+32+16*4)*100%=36.8%