Oblicz skład procentowy (procent masowy) siarczku antymonu (III) używanego do produkcji zapałek.
m Sb2S3 = 2*122u + 3*32u = 340u
m 2Sb = 2*122u = 244u
m 3S = 3*32u =96u
%Sb = 244/340*100% = 71,8%
%S = 96/340*100% = 28,2% (lub 100% - 71,8% = 28,2%)
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m Sb2S3 = 2*122u + 3*32u = 340u
m 2Sb = 2*122u = 244u
m 3S = 3*32u =96u
%Sb = 244/340*100% = 71,8%
%S = 96/340*100% = 28,2% (lub 100% - 71,8% = 28,2%)