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Stosunek masowy:
K : O
39 8
%K = x 100%=7800 : 94=83%
%O= x 100%=1600 : 94=17%
b) m ZnCl2 = 65u + 2 x 35u= 65u + 70u = 135u
Stosunek masowy:
Zn : Cl
13 : 14
%Zn = x 100%= 6500 : 135=48%
%Cl = x 100%=7000 : 135 = 52%
c) m AuO3 = 1 x 197u + 3 x 16u = 197u + 48u=245u
Stosunek masowy:
Au : O
197: 48
%Au= x 100%= 19700 : 245 = 81%
%O= x 100%= 4800 : 245 = 19%