5 and 6 l need both answers please

5. (3 POINTS) - The standard enthalpy of formation for C3H6(g) is akJ/mol. C(s)+O2(g)CO2(g)H=bkJ2H2O()2H2(g)+O2(g);H=ckJ Based on the information given above, what will be the standard enthalpy (H) of the following reaction in terms of a,b, and c ? 2C3H6(g)+9O2(g)6CO2(g)+6H2O()H=. (Write only the result; do not show your operations.) 6. (3 POINTS) At a certain location, the solubility of oxygen (O2) gas in water is than in winter. (lower / higher) in summer The solubility of oxygen gas in water is (lower / higher) at sea level than at the top of a nountain, at the same temperature