magnez + tlen = tlenek magnezu
48g + xg = 80g
x = 32g tlenu
mMg : mO = 48 : 32
mMg : mO = 3 : 2
a)
z prawa zachowania masy:
m tlenu = 80g-48g
m tlenu = 32g
b)
48g:32g = 48:32 = 3:2
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magnez + tlen = tlenek magnezu
48g + xg = 80g
x = 32g tlenu
mMg : mO = 48 : 32
mMg : mO = 3 : 2
a)
z prawa zachowania masy:
m tlenu = 80g-48g
m tlenu = 32g
b)
48g:32g = 48:32 = 3:2