Question

найдите массовую долю элемента Co2, CaS, CaCO3, NaNO3

Answer 1

Co3
w(Co) = 3*59:117 = 0
( CO3 w(C) = 1*59:107 =0,5514 w(O) = 3*16:107 =0, 4485)
CaS
w(Ca) = 1*40:72 = 0,5555
w(S) = 1*32:72 = 0,4444
CaCO3
w(Ca) = 1*40:100 = 0, 4
w(C) = 1*12:100 = 0,12
w(O) = 3*16:100= 0,48
NaNO3
w(Na) = 1*23:85 = 0, 2705
w(N) = 1*14:85 = 0,1647
w(O) = 3*16:85 = 0,5647