Solution: One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro’s number or Avogadro’s constant.
Answer: Avogadro’s number
Fill in the blanks:
5. The number of particles that are contained within one mole of a substance is called _________
5. The number of particles that are contained within one mole of a substance is called _________
Fill in the blanks:
5. The number of particles that are contained within one mole of a substance is called _________
5. The number of particles that are contained within one mole of a substance is called _________
and 
, internal resistance 
and 
, connected in parallel. The equivalent emf of the combination is- (A) 
(B) 
(C) 
(D) 
and 
are collinear, prove that 
and 
be three points such that area of a 
is 4 sq units, find the value of 
.
and 
is 35 sq units.
and 
are collinear.
and 
are collinear.
and 
are collinear.
and 