Réponses

2014-03-28T19:05:41+01:00
Propane: C₃H₈
M(C₃H₈) = 3 M(C)+8 M(H)
              = 3x12+8
              =44,0 g/mol
m = n M
donc n = m/M
            = 10/44
            = 0,227 mol
Q = nxq
Q  = 0,227(662x3+260)
 Q = 510 kJ