Calculate the number of atoms in 4.8dm3 of Neon gas at rtp

Question

Calculate the number of atoms in 4.8dm³ of Neon gas at r.t.p.

 

Answer 1

At STP 1 mole of an ideal gas = 22.4 liters (dm³)

4.8 dm³ x 1 mole/22.4 dm³ = 0.214 moles Neon

0.214 moles x 6.02x10²³ atoms/mole = 1.29x10²³ atoms of Neon