In the lungs, the respiratory membrane separates tiny sacs of air (pressure 1.00x10°Pa) from the blood in the capillaries. These sacs are called alveoli. The average radius of the alveoli is 0.125 mm, and the air inside contains 14% oxygen. Assuming that the air behaves as an ideal gas at 310K, calculate the number of oxygen molecules in one of these sacs. The pressure of an ideal gas is reduced by 50%, resulting in a decrease in temperature to 75% of the initial value. Calculate the ratio of the final to initial volumes of the gas.

In the lungs, the respiratory membrane separates tiny sacs of air (pressure 1.00x10°Pa) from the blood in the capillaries. These sacs are called alveoli. The average radius of the alveoli is 0.125 mm, and the air inside contains 14% oxygen. Assuming that the air behaves as an ideal gas at 310K, calculate the number of oxygen molecules in one of these sacs. The pressure of an ideal gas is reduced by 50%, resulting in a decrease in temperature to 75% of the initial value. Calculate the ratio of the final to initial volumes of the gas.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Diatomic Gas

Molecule, is a collection of two or more atoms together (which constitute the smallest observable unit) into a pure material. There are some ways to represent the structure of a molecule. Factor symbols represent atoms in Lewis structures, and dots represent electrons that accompany them. A pair of mutual electrons (covalent bond) may be represented by a single dash. The ball-and-stick model depicts the spatial structure of the atoms better.

Question

3.3
In the lungs, the respiratory membrane separates tiny sacs of air (pressure 1.00x10°Pa) from the blood in
the capillaries. These sacs are called alveoli. The average radius of the alveoli is 0.125 mm, and the air
inside contains 14% oxygen. Assuming that the air behaves as an ideal gas at 310K, calculate the number
of oxygen molecules in one of these sacs.
3.4
The pressure of an ideal gas is reduced by 50%, resulting in a decrease in temperature to 75% of the initial
value. Calculate the ratio of the final to initial volumes of the gas.

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