What is an example of a stoichiometry practice problem?

Hint: In chemistry by using the stoichiometry it is very easy to calculate the quantity of the desired reactants or products at any time interval of time during the chemical reaction. Stoichiometry is used to measure the amount of elements.

Complete answer:
- In the question it is asked to write the example of a stoichiometry practice problem.
- By considering the mass to mass relationship we can discuss stoichiometry practice problems.
- The example to explain the stoichiometry practice problem is the preparation of ammonia from nitrogen and hydrogen.
- Initially we have to write the balanced equation to prepare the ammonia from nitrogen and hydrogen.
- The balanced chemical equation is as follows.
\[{{N}_{2}}+3{{H}_{2}}\to 2N{{H}_{3}}\]
- Now by using stoichiometry practice problems we can calculate the amount of ammonia is going to form by using 5 gm of nitrogen.
\[\text{5grams of }{{\text{N}}_{\text{2}}}\to \] How many grams of ammonia?
- Now we have to write a way for the calculation process and it is as follows.
\[\text{grams of }{{\text{N}}_{\text{2}}}\to moles\text{ of }{{\text{N}}_{\text{2}}}\to \text{moles of N}{{\text{H}}_{\text{3}}}\to \text{grams of N}{{\text{H}}_{\text{3}}}\]
- In the above sequence it is clearly mentioned that first we have to calculate the moles of the nitrogen from the grams of the nitrogen and later to the number of moles of the ammonia and later to grams of the ammonia.
- This is how we can calculate the quantity of the product formed in a chemical reaction.

Note:
In inorganic chemical reactions and in organic chemical reactions the stoichiometry practice problem has a big role to find the concentration of the products and reactants at any time of the chemical reaction.