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A sample of air contains only nitrogen and oxygen gases whose partial pressures are 0.80 atm and 0.20 atm, respectively. Calculate the total pressure and the mole fractions of the gases.

The total pressure of the gases is 1.00 atm.The mole fraction of the oxygen gas is 0.2The mole fraction of the nitrogen gas is 0.8

Chemistry 101

Chapter 5

Gases

Carleton College

Rice University

Drexel University

Lectures

05:03

In physics, a gas is one of the three major states of matter (the others being liquid and solid). A gas is a fluid that does not support tensile stress, meaning that it is compressible. The word gas is a neologism first used by the early 17th-century Flemish chemist J.B. van Helmont, based on the Greek word ("chaos"), the simplest of all the elemental forms of matter.

04:46

In physics, thermodynamics is the science of energy and its transformations. The three laws of thermodynamics state that energy can be exchanged between physical systems as heat and work; that the total energy of a system can be calculated by adding up all forms of energy in the system; that energy spontaneously flows from being localized to becoming dispersed, spread out, or uniform; and that the entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium.

01:13

A sample of air contains o…

01:46

Calculate the partial pres…

02:18

What is the partial pressu…

18:26

A mixture of gases contain…

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01:06

A gas mixture contains oxy…

01:58

01:32

this question is actually pretty easy. So oxygen contained point to 80 m and managing contain 800.8 80 m so their total would be point to you plus 0.0.8. It's one a t m. Right? If they contain partial point to partial plate So the total will be 1 80 m so one would be 100%. So what we gonna d is? We take point you oxygen partial divided by the total partial divided by the total would be would be the mole fraction So oxygen will be point Teoh nitrogen we 0.8

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