In an experiment carried out at 200 degrees of Celsius and 1 atm pressure,20 cubic centimeters of ammonia gas reacted with an excess of heated copper (ii) oxide,
3Cu(s) + 2NH3(g) ------> 3Cu(s) + 3H2O(g) + N2(g)
If all measurements were made at 200 C and 1 atm pressure, what would be the total volume, in cm3 of gaseous products?