[khemistry101]

i am given that 2 gases react to form a single gas. i am given the pressure of the reactor before the reaction, and the temp. then the reactor is heated to higher temperature i have to find the new partial pressure of each of the gases.

first where do i use stoichiometry in this problem?

[Borek]

Stoichiometry will let you calculate amount of gases after reaction completion (or at equilibrium).