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V = 22,4dm3
d = 2,59g/dm3
m = dV
m = 2,59g/dm3 * 22,4dm3 = 58g
Alkany mają wzór ogólny: CnH2n+2
Wzór ogólny na masę alkanów: 12n + 1(2n+1) = 14n+2
14n+2 = 58
14n = 56
n = 4
Alkan to C4H10
Stosunek molowy: 4:10 = 2:5