Advertisements
Advertisements
प्रश्न
One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.
Advertisements
उत्तर
The size of a particle (or molecule of matter is very small. 1 litre of water has 6.02 × 1026molecules, so the volume of a particle of water is
`(10^-3"m"^3)/(6.0 × 10^26)` = 1.6 × `10^-30 "m" ^3`.
Thus the diameter of a water molecule is nearly 1.27 × 10−9 metre.
APPEARS IN
संबंधित प्रश्न
Define interconversion of states of matter.
Name the terms for the process due to which a solid directly changes into its vapours.
Give reason Pure substances have fixed melting or boiling point .
The process by which a solid change into a liquid is called
Give a reason for the Electricity is not considered matter.
Identify the odd term out and explain.
Give two examples.
Liquid element
Give two examples.
Gaseous element
Write a scientific reason.
Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.
Give a reason for the following:
A crystal of iodine on slow heating in a closed flask turns into vapours and fills the complete flask.
