Question

Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight.

(a) Whose container is heavier ? (b) Whose container has more number of atoms ?

Answer 1

Part 1:

We know that

• Mass of carbon atoms carried by Rounak =$5\times 12=60g$
• Mass of Sodium atoms carried by Krish =$5$$\times 23=115g$
• Thus Krish's container is heavier

Part 2:

Since both the containers have the same number of moles, the number of atoms present in these containers is also the same i.e. 5 x ${\mathrm{N}}_{\mathrm{A}}$atoms.