Assume you have 28.0 grams of nitrogen and 5.0 grams of hydrogen what is the limiting reactant

Hydrogen is the limiting reagent.

Explanation:

Limiting Reagent : It is the substance that get consumed when the reaction complete. It is used to determine the what amount of product will be formed.

When and   react, it will produce

gas . The balance reaction can be written as:\

Here, 1 mol   require 3 mol

In question ,

Molar mass of H2 = 2 g/mol , given mass = 5 g

= 2.5 mole

Molar mass of N2 = 28 g/mol , given mass = 28 g

= 1 mole

Since, 1 mole   require 3 mole

But available , mole of   = 2.5

So we need extra 0.5 moles of Hydrogen gas

Hence get consumed first , Thus Hydrogen is the limiting reagent