The scientist used the law of conservation of mass, which states that in a chemical reaction, matter is neither created nor destroyed; therefore, the total mass of the reactants (6.7 grams of nitrogen + 19.3 grams of hydrogen = 26 grams) must equal the total mass of the products, leading to the prediction that 26 grams of ammonia would be formed.
Use the chemical equation to complete the activity.
N2+3H2−> 2NH3
𝑁
2
+
3
𝐻
2
−
>
2
𝑁
𝐻
3
Nitrogen gas (N2
𝑁
2
) reacts with hydrogen gas (H2
𝐻
2
) to form ammonia (NH3
𝑁
𝐻
3
), 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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