0
56.5/4= 14.125mols
14.125 X 22.5dm3 = 317.8125dm3
Wiki User
∙ 14y ago
Wiki User
∙ 10y ago1 mole of gas occupies 22.4 L at STP. So 56/22.4 = 2.5 moles. Neon has Atomic Mass of 20 and so 2.5 moles x 20 atomic weight = 50 so the mass is 50g.
Myriam Paraisy
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