please solve the problem below and give me the final answer and please explain the answer step-by-step

One method for the manufacture of "Synthesis gas" (a mixture of CO and H2 ) is the catalytic reforming of CH4 with stream at high temperature and atmospheric pressure The only side reaction to be considered is: If the reactants is supplied in the ratio, 2 mol steam to 1 molCH4 and if heat is supplied to the reactor so that the products reach a temperature of 1300K, the CH4 is completely converted and the product stream contains 17.4mol%CO. Assuming the reactants to be preheated to 600K, calculate the heat requirement for the reactor. Calculate using Heat of Reaction method and Heat of Formation method