Question

calculate the number of atoms in 5g of H atoms​

Answer 1

Answer:

No. Of atoms= no. Of moles x avogadro's number ———(1)

avogadro's number=6.022× 10^23

no. Of moles= given mass /molar mass

given mass=5g

molar mass= 1

therefore, no. Of moles= 5/1 = 5 ———(2)

substituting (2) in (1),

no. Of atoms= 5 x 6.022× 10^23

= 30.11 x 10^23