Practice Questions for Atoms and Molecules Science Class 9
In water, hydrogen and oxygen are present in the ratio of _________.
The element which is Octa-atomic is
A sample contains 22 g of carbon dioxide. This is equal to ________.
The atomic mass of sodium is 23. The number of moles in 46g of sodium is __________.
The number of gram atoms are present in 69 grams of sodium is
Which postulate of Dalton's atomic theory is the result of the law of conservation of mass?
Topics in Class 9 Science: