Advertisements
Advertisements
प्रश्न
Ruthresh, Hari, Kanishka, and Thahera collected different samples of water from a well, a pond, a river, and underground water. All these samples were sent to a testing laboratory. The test result showed the ratio of hydrogen to oxygen as 1:8.
- What conclusion would you draw from the above experiment?
- Which law of chemical combination does it obey?
Advertisements
उत्तर
- Water obtained from different sources like a well, a pond, a river, and underground water will always consist of the same two elements hydrogen and oxygen in the ratio of 1: 8 by mass.
- It obeys the law of constant proportion.
APPEARS IN
संबंधित प्रश्न
Which postulate of Dalton's atomic theory is the result of law of conservation of mass given by Lavoisier ?
Name any two laws of chemical combination.
Give one major drawback of Dalton's atomic theory of matter.
State the law of constant proportions. Give one example to illustrate this law.
Which postulate of Dalton’s atomic theory can explain the law of constant proportions ?
In water, the proportion of oxygen and hydrogen by mass is :
When 5 g of calcium is burnt in 2 g of oxygen, then 7 g of calcium oxide is produced. What mass of calcium oxide will be produced when 5 g of calcium is burnt in 20 g of oxygen ? Which law of chemical combination will govern your answer ?
Work out the formulae for the following compounds:
Calcium carbonate
In water, hydrogen and oxygen are combined in the ratio of _____ by mass.
State the law of constant proportions.
