Химия 8 класс,срочно!!!!!!!​

Ответ:

Объяснение:

Mr(C4H6O4) = 12*4 + 1*6 + 16*4 =118

W(C) = Ar(C) *n / Mr(C4H6O4)  *100% = 12*4 / 118  *100% =41%

W(H) = Ar(H) *n / Mr(C4H6O4)  *100% = 1*6 / 118  *100% = 5%

W(O)= Ar(O) *n / Mr(C4H6O4)  *100% = 16*4 / 118  *100% =54%

Mr(C6H7N) = 12*6 + 1*7 + 14 =93

W(C) = Ar(C) *n / Mr(C6H7N)  *100% = 12*6 / 93  *100% =77%

W(H) = Ar(H) *n / Mr(C6H7N)  *100% = 1*7 / 93  *100% = 7%

W(N) = Ar(N) *n / Mr(C6H7N)  *100% = 14*1 / 93  *100% =16%

Mr(NaNO3) = 23+14+16*3=85

W(Na) = Ar(Na) *n / Mr(NaNO3)  *100% =23*1 / 85  *100% =27%

W(N) = Ar(N) *n / Mr(NaNO3)  *100% = 14*1 / 85  *100% =16%

W(O)= Ar(O) *n / Mr(NaNO3)  *100% = 16*3 / 85  *100% =57%