Advertisements
Advertisements
Question
One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.
Advertisements
Solution
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
RELATED QUESTIONS
State three main characteristics of the particles of matter.
Write true or false for each statement. Rewrite the false statement correctly.
Solids and liquids can flow.
If an object weighs 6 kg on earth. What will be its weight on moon?
Give one difference between atoms and molecules.
Define Intermodular space.
Give reason :
A gas fills up the space available to it.
Solids retain their volume even when external pressure is applied. This property is called ______.
Identify the odd term out and explain.
Give a reason for the following:
Globules of mercury kept in a petri dish, which is shaken slowly, come together forming a big globule.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
