miedź + tlen ---> tlenek miedzi(II)
128g + xg = 160g
x = 32g tlenu
mCu : mO = 128 : 32
mCu : mO = 4 : 1
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miedź + tlen ---> tlenek miedzi(II)
128g + xg = 160g
x = 32g tlenu
mCu : mO = 128 : 32
mCu : mO = 4 : 1