Which would produce greater number of moles of product: a certain amount of hydrogen gas reacting with oxygen gas to make water, or the same amount of hydrogen gas reacting with nitrogen gas to make ammonia? Why?

Answer 1

Write the two balanced equations and see.

2H2 + O2 ==> 2H2O

3H2 + N2 ==> 2NH3.

Use a convenient number of moles H2 to start (say 2 moles but you can pick any number as long as you use the same number for both equations). How much water will we get (in moles).
2 moles H2 x (2 moles H2O/2 moles H2) = 2 moles x (2/2) = 2 mole H2O.
You can do NH3 the same way and compare. Post your work if you get stuck.

Answer 2

help me. i don't understand