Question

Two elements, hydrogen and nitrogen, are mixed to produce ammonia. 18.18 grams of hydrogen are mixed with 84.06 gram of nitrogen. According to the law of conservation of mass, what happens to the total mass as the reaction takes place?

Answer 1

According to the law of conservation of mass, the total mass remains the same as the reaction takes place.

Step-by-step explanation:

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. In the given reaction, hydrogen and nitrogen combine to form ammonia. The total mass of the reactants (hydrogen and nitrogen) must be equal to the total mass of the products (ammonia).

To determine the total mass before and after the reaction, we can convert the given masses of hydrogen and nitrogen to moles using their molar masses. Then, we can use the balanced chemical equation to determine the mole ratios of the reactants and products. Finally, we can convert the moles of ammonia to grams using its molar mass to find the total mass of the products.

In this case, 1 mole of nitrogen has a mass of 28.02 g, while 3 moles of hydrogen have a mass of 6.06 g. When these reactants combine to form 2 moles of ammonia, the total mass of the products is 34.08 g.