How many grams of SO2 can be produced if
2.5 moles of O2 are used?
S2 + 2O2 → 2SO2

mass of SO2 is 160 g

Explanation: according to equation number of moles of SO2

Is same as amount of Oxygen, also 2.5 moles.

Molar mass of SO2 is 32.07 +2·16 = 64.07 g/mol

Mass is m= nM = 2.5 mol· 64.07 g/mol= 160.175 g

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

what is the question here. i think you messed up.