Question

1. Give an example to show Law of conservation of mass applies to physical change also.

2. Explain with example that law of conservation of mass is valid for chemical reactions.

3. The 2.8 g of nitrogen gas was allowed to react with 0.6 g of hydrogen gas to produce 3.4 g

of ammonia. Show that these observations are in agreement with the law of Conservation

of mass.

4. If 12 g of carbon is burnt in the presence of 32 g of oxygen, how much carbon dioxide will

be formed?​

Answer 1

Answer:

1. Conversion water liquid state to solid state there is no change in mass so it is example for law conservation of mass in physical change

Explanation:

2 calcium carbonate on calcination produce calcium calcium oxide and carbon dioxide so the mass of the reactants and products same

3 yes why because some of the nitrogen and hydrogen produce ammonia. mass of the reactants is equal to 3.4 grams and products 3.4 grams so obeys law of conservation of mass

4 44 grams of carbon dioxide released