Finding Reactants and Using a Balanced Equation

Question

Ammonia is produced from the reaction of nitrogen and hydrogen according to the following balanced equation:

N_2(g) + 3H_2(g) → 2NH_3(g)

1. What is the maximum mass of ammonia that can be produced from a mixture of 198.7 g of N₂ and 46.61 g of H₂?  g

2. Which element would be left partially unreacted? (enter nitrogen or hydrogen) 

3. What mass of the starting material would remain unreacted?  g

The answers I got were 242g for the first one, hydrogen for the second, and 32.2g for the last question, but it said I was wrong.

Answer 1

Hi He!

I believe that you got the first part of the question right because when I did it, I got an answer of 241.8g. Maybe your assignment is sensitive to decimal places? I doubt that is the case.

However, for the second part of the problem, I got an answer of 3.67g of leftover H2. Maybe you need to have all parts correct for the whole problem to be correct?

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Hope that helps!