A breathing mixture is prepared in which He is substituted for N 2 . The gas is
Question:
A breathing mixture is prepared in which He is substituted for N2. The gas is 79% He and 21% O2, by volume.
(a) What is the density of this mixture in grams per liter at 25 °C and 1.00 atm?
(b) At what pressure would the He–O2 mixture have the same density as that of air at 25 °C and 1.00 atm? See Exercise 103 for the composition of air.
Exercise 103
When working with a mixture of gases, it is sometimes convenient to use an apparent molar mass (a weighted average molar mass). Think in terms of replacing the mixture with a hypothetical single gas. What is the apparent molar mass of air, given that air is 78.08% N2, 20.95% O2, 0.93% Ar, and 0.036% CO2, by volume?
Step by Step Answer:
a To determine the density of the HeO2 mixture at 25 C 29815 K and 100 atm we first need to calculat...View the full answer
General Chemistry Principles And Modern Applications
ISBN: 9780132931281
11th Edition
Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette
