Problem on limiting reagent and enthalpy

Question

Assignment:

Question 1. The volume in Liters of H2(g), measured at 22 degrees C and 745 mmHg, required to react with 30.0 L of CO (g), measured at 0 degrees C and 760 mmHg, in the reaction 3CO(g)+7H₂(g) --> C₃H₈(g)+3H₂O(l) is?

Question 2. The complete combustion of propane, C₃H₈(g), is represented by the equation C₃H₈(g)+5O₂(g)-->3CO₂(g)+4H₂O(l). Delta H (change of enthalpy)=-2220 kJ.
How much heat is involved in the complete combustion of 12.5L C₃H₈(g) at 25 degrees C and 790 mmHg?

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