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| 1. |
Law of constant proportion |
| Answer» \tThe law states that in a chemical substances the elements are always present in a definite proportion by mass. It is also termed as law of definite proportion.\tFor instance, the ratio of hydrogen and oxygen in water obtained from any source is 1:8 i.e. 1g of hydrogen and 8g of oxygen together make up 9g of water.\tSimilarly the ration of nitrogen and hydrogen in ammonia is 14:3. | |