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Problem 2 An adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: Species Inspired Gas (%) Expired Gas (%) O: CO: 20.6 15.1 0.0 3.7 N: 77.4 75.0 Н.О 2.0 6.2 The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and i atm). Nitrogen is not transported inte or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. Calculate the masses of O:, CO:, and H:O transferred from the

Problem 2 An adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: Species Inspired Gas (%) Expired Gas (%) O: CO: 20.6 15.1 0.0 3.7 N: 77.4 75.0 Н.О 2.0 6.2 The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and i atm). Nitrogen is not transported inte or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. Calculate the masses of O:, CO:, and H:O transferred from the

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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**Problem 2** An adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: | Species | Inspired Gas (%) | Expired Gas (%) | |---------|------------------|-----------------| | O₂ | 20.6 | 15.1 | | CO₂ | 0.0 | 3.7 | | N₂ | 77.4 | 75.0 | | H₂O | 2.0 | 6.2 | The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and 1 atm). Nitrogen is not transported into or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. **Calculate the masses of O₂, CO₂, and H₂O transferred from the pulmonary gases to the blood or vice versa (specify which) per minute.** 2. **Calculate the volume of air exhaled per milliliter inhaled.** 3. **At what rate (g/min) is this individual losing weight by merely breathing?** **Explanation of Data Table:** - Inspired gas is the composition of gases inhaled by the person. - Expired gas is the composition of gases exhaled by the person. - The table shows the percentage composition of each gas (Oxygen, Carbon Dioxide, Nitrogen, Water Vapor) in both inspired and expired air. Notably, inhaled air contains no CO₂, but exhaled air contains 3.7% CO₂, indicating gas exchange.
Transcribed Image Text:**Problem 2** An adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: | Species | Inspired Gas (%) | Expired Gas (%) | |---------|------------------|-----------------| | O₂ | 20.6 | 15.1 | | CO₂ | 0.0 | 3.7 | | N₂ | 77.4 | 75.0 | | H₂O | 2.0 | 6.2 | The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and 1 atm). Nitrogen is not transported into or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. **Calculate the masses of O₂, CO₂, and H₂O transferred from the pulmonary gases to the blood or vice versa (specify which) per minute.** 2. **Calculate the volume of air exhaled per milliliter inhaled.** 3. **At what rate (g/min) is this individual losing weight by merely breathing?** **Explanation of Data Table:** - Inspired gas is the composition of gases inhaled by the person. - Expired gas is the composition of gases exhaled by the person. - The table shows the percentage composition of each gas (Oxygen, Carbon Dioxide, Nitrogen, Water Vapor) in both inspired and expired air. Notably, inhaled air contains no CO₂, but exhaled air contains 3.7% CO₂, indicating gas exchange.
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