How many moles of hydrogen is necessary to react with 20 moles of nitrogen to produce ammonia

1 N2 + 3 H2 ------> 2NH3

Will someone list the steps to solve this? Thanks

From the equation 1 N2+3 H2---->2 NH3; mole ratio is N2:H2 is 1:3
therefore 1mole of N2----->3moles of H2
hence 20 moles of N2-----> 20 by 3moles of H2
= 60 moles of H2

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3 X 20 = 60 Moles.

I think 60 mole.