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H2SO4= 1*2+32+16*4=98u
I teraz. Proporcje
2-x%
98-100%
X=100%*2/98
Pózniej dla Siarki
32-x%
98-100%
X=100%*32/98
I dla tlenu
64-x%
98-100%
X=100%*64/98