3. Determine the volume occupied by 36.2 grams of carbon dioxide gas at STP. Molar mass of CO2 = 44.0 g/mol. Use above STP conditions.
Formula PV = (m/M)nRT where m = mass of sample and M = molar mass of substance.

the answer for sodium is 0.186

the answer for rubidium is 0.251

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 :