Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy change represented by x? 3 C + 3 O2 yields 3 CO2 deltaH = -1182 kJ 4 H2 + 2 O2 yields 4 H2O deltaH =-1144 kJ C3H8 + 5 O2 yields 3 CO2 + 4 H2O deltaH = x C3H8 yields 3 C + 4 H2 deltaH = 104 kJ

Question

Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy change represented by x?  3 C + 3 O2 yields 3 CO2 deltaH = -1182 kJ  4 H2 + 2 O2 yields 4 H2O deltaH =-1144 kJ  C3H8 + 5 O2 yields 3 CO2 + 4 H2O deltaH = x  C3H8 yields 3 C + 4 H2 deltaH = 104 kJ

anonymous · Answer

A)104 = (-1182) - [x + (-1144)]

 B)104 = x - [(-1182) + (-1144)]

 C)104 = (-1182) + (-1144) + x

D) 104 = x + (-1182) - (-1144)