A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content...

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Question

Answer 1

Answer #1

Molar mass of O2 = 32 g/mol

51 g / 32 g/mol => 1.59 moles

Molar mass of He = 4 g/mol

33.2 g / 4 g/mol => 8.3 moles

Total moles = 1.59 + 8.3 => 9.89 moles

Total P = nRT / V

P = 9.89 moles x 0.082 L atm / mol.K x 291 K / 10 L ( note 18 C = 18 + 273 = 291 K )

P = 23.60 atm

partial P of O2 => (1.59 / 9.89 ) x 23.6 => 3.79 atm

partial P of He => (8.3 / 9.89 ) x 23.6 => 19.80 atm

Answer : 3.79, 19.8, 23.6

Answer 2

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