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mncri mol= 39 gr/26 =1,5 mol
kan klu dia seimbang 1 mol..
jdi 150 kJ/1.5 mol= 100 kJ/mol
persamaan termokimia
C3H8 + 5O2 => 3CO2 + 4H2O ΔH = -223 kJ
b.
n C2H2 = 39/26 = 1,5 mol
ΔH = 150/1,5 = 100 kJ/mol
persamaan termokimia
2C(s) + H2(g) ==> C2H2(g) ΔH = +100 kJ/mol