using avagardos law

Question

Hydrogen gas and nitrogen gas react to form ammonia gas. What volume of ammonia would be produced by this reaction if 9.78 cm3 of nitrogen were consumed? 

Also, be sure your answer has a unit symbol, and is rounded to 3 significant digits.

Answer 1

The beauty of Avogadro;s Principle, n_i is proportional to V_i , is that you can use volumes to measure gases at a set temperature and pressure as your extensive variable. You write the equation for the reaction and the stoichiometry can be used as volume ratios (in any volume units) rather than the typical mole ratios.

There are 2 volumes NH₃ produced / 1 volume of N₂ reacted. (This is like a conversion factor)