What mass of Li3PO4 can be prepared from the complete reaction of 7.17g of LiOH with a stoichiometric amount of H3PO4?

1) What is the final temperature when heat of 1100kJ is added to 30moles of SO2 initially at 300 Celsius in
a steady flow heat exchanger at atmospheric pressure

2)One (1) mol of Propane is placed in an adiabatic, constant pressure combustion chamber at 25 C.
The reaction will follow: C3H8 + 5O2 → 3CO2 + 4H2O
What is the final temperature of the system under those various cases? Assume complete
combustion.
a. it is mixed with a stoichiometric amount of oxygen and reacts to form H2O and CO2

b. It is mixed with a stoichiometric amount of air (same reaction than a)

When 10.0mL of H2O2 was decomposed, all of the oxygen produced was captured. How much heat is released if this oxygen is completely reacted with a stoichiometric amount of hydrogen to produce liquid water?