Advertisements
Advertisements
Question
State the ‘law of conservation of mass’.
Advertisements
Solution
Law of Conservation of Mass: “In any chemical reaction, the total mass of the reacting substances is equal to the total mass of the products of the reaction provided masses are measured under similar conditions.”
APPEARS IN
RELATED QUESTIONS
What do you observe when, barium chloride solution is mixed with sodium sulphate solution ?
When magnesium is burnt in air, there is an increase in mass after the reaction.
What is mass ?
If an object weighs 6 kg on earth. What will be its weight on moon ?
If an object is taken to the moon from the earth what will be its mass ?
State the law of conservation of mass.
Name the scientist who gave law of conservation of mass.
State the law of conservation of mass. Give one example to illustrate this law.
The law of conservation of mass was given by :
Copper sulphate reacts with sodium hydroxide to form a blue precipitate of copper hydroxide and sodium
sulphate. In an experiment, 15.95 g of copper sulphate reacted with 8.0 g of sodium hydroxide to form
9.75 g of copper hydroxide and 14.2 g of sodium sulphate. Which law of chemical combination is illustrated by this data ? Give reason for your choice.
Potassium chlorate decomposes, on heating, to form potassium chloride and oxygen. When 24.5 g of potassium chlorate is decomposed completely, then 14.9 g of potassium chloride is formed. Calculate the mass of oxygen formed. Which law of chemical combination have you used in solving this problem ?
An ionic compound will be formed by the combination of one of the following pairs of elements. This pair of elements is :
State the main points of Landolt’s experiment for experimental evidence of the law.
Complete the statement by filling the blank with the correct word given below.
The law of conservation of mass is strictly valid if mass and _________ are considered together.
Match the following.
| Law of conservation of mass | Sir William Crookes |
| Law of constant proportion | James Chadwick |
| Cathode rays | Joseph Proust |
| Anode rays | Lavoisier |
| Neutrons | Goldstein |
The chemical symbol for nitrogen gas is ______.
