Question

(b) 4.2 g of nitrogen gas was allowed to react with 0.9 g of hydrogen gas to produce 5.1 g of ammonia. Show that these observations are in agreement with the law of conservation of mass. (1)​

Answer 1

Explanation:

here 4.2 g of nitrogen gas is reacting to 0.9 g of hydrogen so it will produce 5.1g of nh3 so this law is law of conservation of mass

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Answer 2

Answer:

These observations are in agreement with the law of conservation of mass. The proof has been explained below.

Explanation:

The law of conservation of mass states that the total mass of a system remains constant during a chemical reaction. In other words, the mass of the reactants must be equal to the mass of the products.

In the reaction between nitrogen gas (N2) and hydrogen gas (H2) to produce ammonia (NH3), the total mass of the reactants is:

4.2 g + 0.9 g = 5.1 g,

which is equal to the mass of the product, 5.1 g.

Therefore, these observations are in agreement with the law of conservation of mass, as the total mass before and after the reaction is equal. The mass of the reactants and the mass of the products are balanced, meaning that the law of conservation of mass has been satisfied.

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