Question

I get 2 marks for this so plz answer. How many particles are in a 53.2 L volume of gas at STP?

Answer 1

The number of particles= 1.43 x 10²⁴ particles

Further explanation

Given

53.2 L volume of gas at STP

Required

The number of particles

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

So mol for 53.2 L :

= 53.2/22.4

= 2.375 moles

1 mol = 6.02 x 10²³ particles (molecules, atoms, ions)

The number of paricles for  2.375 moles gas :

= 2.375 x 6.02 x 10²³

= 1.43 x 10²⁴ particles