posted by Anonymous .
gaseous ammonia is made by the following reaction: N2+3H2 - 2NH3. if you start with 7 liters on nitrogen gas, how many liters of hydrogen are needed for a chemical reaction?
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Technically, only one tiny speck of H2 (one molecule) is need for a reaction. I think what you meant is for a complete reaction to use the 7 g N2.
N2 + 3H2 ==> 2NH3
You can use Avogadro's Law and use volumes (liters) directly.
7 liters N2 x (3 liters H2/1 liter N2) = ?? liters H2.