soccerpro16 soccerpro16
  • 01-12-2020
  • Chemistry
contestada

What is the volume of 139.05 g of neon gas at STP?
Ans:___L Ne

Respuesta :

PhantomWisdom PhantomWisdom
  • 06-12-2020

Given :

Mass of neon gas at STP.

To Find :

The volume of 139.05 g of neon gas at STP.

Solution :

Molar mass of neon, M = 20 g.

Number of moles in 139.05 g of neon :

n = 139.05/20 ≈ 7 moles

We know, volume of 1 mole of any atom/molecules in STP is 22.4 L of volume.

So, volume of 7 moles of neon is :

V = 7×22.4 L

V = 156.8 L

Therefore, volume of 139.05 g of neon gas at STP is 156.8 L.

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