So, I tried this question out to find the total volume of gases in a reaction. The question is:
''Nitromethane, CH3NO2, is used as an ‘energy rich’ fuel for motor-racing. It burns in oxygen forming three gases.
2CH3NO2(l) + 1½O2(g) → 2CO2(g) + 3H2O(g) + N2(g)
(i) A 1.00 mol sample of nitromethane was burned in oxygen forming the products shown in the equation above. Calculate the total volume of gases produced at 298 K and 100 kPa (assume that the water is gaseous)''
In the mark scheme, it says for the total moles of gas produced equals 3, shouldn't it be 6 as 2CO2 (g) + 3H20 (g) + 1N2 (g) gives 6 Moles of gas?