Question

How many particles are in 56 L of nitrogen gas at standard conditions?

0 1.2 x 1023 particles
O 2.5 particles
O 1.5 x 1024 particles
O 2.5 x 1024 particles

Answer 1

The molar mass of N

2

is 28 g/mol.

56 grams of N

2

=

28g/mol

56g

=2moles

At STP, 1 mole of any gas occupies a volume of 22.4 L.

2 moles of N

2

at STP will occupy a volume of 2×22.4=44.8L