What would be the change in enthalpy if you detonated 2 moles of NI3 producing N2 and I2 in a reaction? Would the reaction be endothermic or exothermic?

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.