Use this equation: N2 + 3 H2 ---> 2 NH3, for the following problems  a) If you used 1 mole of N2, how many moles of NH3 could be produced?   b) If 10 moles of NH3 were produced, how many moles of N2 would be required?  c) If 3.00 moles of H2 were used, how many moles of NH3 would be made?  d) If 0.600 moles of NH3 were produced, how many moles of H2 are required?