Question 19

19. What is the standard enthalpy change, $\Delta H^\ominus_{\text{combustion}}$, according to the data?

Amount of fuel burned = 0.110 mol
Mass of water = 200 g
Initial temperature of water = 21.0 °C
Final temperature of water = 25.0 °C
Specific heat capacity of water, $c_w$ = 4.18 J g$^{-1}$ K$^{-1}$
$Q = mc\Delta T$