4NaCI + 2CO2 + _H2O + _O2 -> _Na2SO4 +4HCI which numbers balance this equation

a) 1, 2, 2
b) 2, 1, 2
c) 1, 2, 4
d) 2, 1, 4

answer needed immediately

Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal