The scientist used the Law of Conservation of Mass, which states that in a closed system, mass is neither created nor destroyed during a chemical reaction. Therefore, the total mass of the reactants (6.7 grams of nitrogen and 19.3 grams of hydrogen, totaling 26 grams) must equal the total mass of the products, leading the scientist to predict that the reaction would yield 26 grams of ammonia.
Use the chemical equation to complete the activity.
N2+3H2−> 2NH3
Nitrogen gas ( N2
) reacts with hydrogen gas ( H2
) to form ammonia ( NH3
), a well-known cleaning product present in many households. A scientist adds 6.7 grams of nitrogen gas to 19.3 grams of hydrogen gas to start the reaction. In this reaction, all of the nitrogen and hydrogen react. Before running the experiment, the scientist expected the products of the reaction to be a total of 26 grams of ammonia. In 1-2 sentences, explain the law that the scientist used to predict that the product of the reaction would be 26 grams of ammonia.
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