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Consider a pressure cooker with a capacity of 2 L (2 liters). A cook pours 9 grams of water into the pressure cooker, and seals the lid. The air that is trapped inside has a temperature of 20 °C and a pressure of 1 atm. The water also has an initial temperature of 20 °C. He turns the pressure cooker on, and raises the temperature to 500 °C. The water evaporates and turns into steam. At this point, we have two gasses inside the pressure cooker. One is air at 500 °C, and the other is steam also at 500 °C. Calculate the pressure inside the container. You may treat both air and steam as ideal gasses. Hint: You will have to calculate two pressures. Calculate pressure P, of steam and pressure Pa of air. Then, add the two pressures. You may need the following information: Molar mass of water: 18 g/mole , Mass density of water: 1000 kg/m³ , Molar mass of air: 28.8 g/mole , Mass density of air: 1.2 kg/m³ .

Consider a pressure cooker with a capacity of 2 L (2 liters). A cook pours 9 grams of water into the pressure cooker, and seals the lid. The air that is trapped inside has a temperature of 20 °C and a pressure of 1 atm. The water also has an initial temperature of 20 °C. He turns the pressure cooker on, and raises the temperature to 500 °C. The water evaporates and turns into steam. At this point, we have two gasses inside the pressure cooker. One is air at 500 °C, and the other is steam also at 500 °C. Calculate the pressure inside the container. You may treat both air and steam as ideal gasses. Hint: You will have to calculate two pressures. Calculate pressure P, of steam and pressure Pa of air. Then, add the two pressures. You may need the following information: Molar mass of water: 18 g/mole , Mass density of water: 1000 kg/m³ , Molar mass of air: 28.8 g/mole , Mass density of air: 1.2 kg/m³ .

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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THE ANSWER SHOULD BE Answer: 1.873 X 10^6 Pa

Consider a pressure cooker with a capacity of 2 L (2 liters). A cook pours 9 grams of water into the pressure cooker, and seals the lid. The air that is trapped inside has a temperature of 20 °C and a pressure of 1 atm. The water also has an initial temperature of 20 °C. He turns the pressure cooker on, and raises the temperature to 500 °C. The water evaporates and turns into steam. At this point, we have two gasses inside the pressure cooker. One is air at 500 °C, and the other is steam also at 500 °c. Calculate the pressure inside the container. You may treat both air and steam as ideal gasses. Hint: You will have to calculate two pressures. Calculate pressure P, of steam and pressure Pa of air. Then, add the two pressures. You may need the following information: Molar mass of water: 18 g/mole , Mass density of water: 1000 kg/m³ , Molar mass of air: 28.8 g/mole , Mass density of air: 1.2 kg/m³ .
Transcribed Image Text:Consider a pressure cooker with a capacity of 2 L (2 liters). A cook pours 9 grams of water into the pressure cooker, and seals the lid. The air that is trapped inside has a temperature of 20 °C and a pressure of 1 atm. The water also has an initial temperature of 20 °C. He turns the pressure cooker on, and raises the temperature to 500 °C. The water evaporates and turns into steam. At this point, we have two gasses inside the pressure cooker. One is air at 500 °C, and the other is steam also at 500 °c. Calculate the pressure inside the container. You may treat both air and steam as ideal gasses. Hint: You will have to calculate two pressures. Calculate pressure P, of steam and pressure Pa of air. Then, add the two pressures. You may need the following information: Molar mass of water: 18 g/mole , Mass density of water: 1000 kg/m³ , Molar mass of air: 28.8 g/mole , Mass density of air: 1.2 kg/m³ .
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