Question

two precautions to verify the law of conservation of mass

Answer 1

Law of conservation of mass states that " Mass is neither created nor destroyed throughout the chemical reaction."
∴Total mass of reactants = Total mass of products

Precautions to be followed while performing experiment:
---->The spring balance should be held vertical while measuring values.
---->Make sure the spring balance pointer is at zero mark.
---->The reading of values should be noted only when pointer comes to rest.
--->Chemicals in the experiment, should be mixed at very slow rate.

Answer 2

Answer:

Explanation:

Precautions to be followed while performing experiment:

---->The spring balance should be held vertical while measuring values.

---->Make sure the spring balance pointer is at zero mark.

---->The reading of values should be noted only when pointer comes to rest.

--->Chemicals in the experiment, should be mixed at very slow rate.