Nitrogen combine with hydrogen to produce ammonia at a ratio:
Assuming that the reaction has indeed proceeded to completion- with all nitrogen used up as the question has indicated. of hydrogen gas would have been consumed while of ammonia would have been produced. The final mixture would therefore contain
Apply the ideal gas law to find the total pressure inside the container and the respective partial pressure of hydrogen and ammonia:
Some offspring may be tall, some may be short, and some may be medium medium sized.
In a typical double displacement reaction, you would have a total of two products (AB + CD —> AD + BC).