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BeccaRodwell
How many moles of hydrogen will be needed to react with 2 moles of nitrogen according to N2+3H2--->2NH3
original equation is balanced since it's asking for 2 moles of N2 then simply multiple entire given equation by 2 2(N2+ 3H2 ---> 2NH3) = 2N2 + 6H2 --> 4NH3 so 6 moles of hydrogen