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YeahYou YeahYou
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7 years ago


In the reaction of nitrogen gas, N2, with hydrogen gas, H2, to form ammonia gas, NH3, how many moles of hydrogen are needed to react with 1.22 mol of nitrogen?
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#1
7 years ago
Assuming that N2 is the limiting reactant in which 1.22 mol N2 will react completely

Step 1) Write and balance chemical equation
N2(g) + 3H2(g) --------------> 2NH3(g)

Step 2) Use dimensional analysis, or set a proportion to see how many mol H2 are needed. Here, I use dimensional analysis. Start with the given (1.22molN2), multiply it by the values in mol from the balanced equation so that the units cancel out.
1.22molN2 * (3molH2 / 1molN2) = 3.66molH2
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