Determine the amount of heat (in kJ) given off when 1.26X10^4grams of NO2 are produced?

Question

this is the equation 2NO(g) + O2(g)------------>2NO2(g)
the heat enthalpy is -114.6kJ/mol

Answer 1

Your data tells you how much heat is given out when 2 x 46g of NO2 is formed. Now scale up to the quantity given.