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irelandm irelandm
  • 10-01-2016
  • Chemistry
Answered

a 2.00 gram sample of helium gas at STP will occupy a volume of

Verified Answer :

Willchemistry
Willchemistry Willchemistry
  • 10-01-2016

Molar mass Helium ( He ) = 4,0 g/mol

solute = 2,00 g

Number of mols:

n = m / mm

n = 2,00 / 4,0

n = 0,5 moles of Helium

1 mol Helium ------------ 22,4 L  STP
0,5 moles ---------------- x L

x = 0,5 . 22,4

x = 11,2 L

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