## Question

# The composition of moist air is given on a molar basis to be 78 percent N2, 20 percent O2, and 2 percent water vapor.

The composition of moist air is given on a molar basis to be 78 percent N2, 20 percent O2, and 2 percent water vapor. Determine the mass fractions of the constituents of air. Use the table containing the molar mass, gas constant, and critical-point properties. The mass fraction of N2 is 76.363 %. The mass fraction of O2 is [ 22.377 %. The mass fraction of water vapor is 1.258 %.

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### Thermodynamics An Engineering Approach

**Authors:** Yunus A. Cengel, Michael A. Boles

8th edition

73398179, 978-0073398174

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