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Course: Physical Chemistry (Essentials) - Class 11 > Unit 5

Lesson 5: Partial pressures
Science
Physical Chemistry (Essentials) - Class 11
Gaseous state
Partial pressures
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Calculations involving the Dalton's law of partial pressures.

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Problem

At a particular temperature, 32g of He is mixed with 28g of NA2 in a closed container.
The pressure exerted by the mixture is 18atm.
Calculate the ratio of partial pressures of He and NA2.
  • Your answer should be
  • a proper fraction, like 1/2 or 6/10
  • an improper fraction, like 10/7 or 14/8
  • an exact decimal, like 0.75