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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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Similar questions

A high-altitude balloon contains helium, whose molar mass is 4.00 g/mol. At theballoon’s maximum altitude, its volume is 792 m3 and the outside temperatureand pressure are -53.0 °C and 5.00 kPa, respectively. Assume that the helium in theballoon is in equilibrium with the outside air temperature and pressure.(a) Use the ideal gas law to find the amount of helium in the balloon at maximumaltitude.(b) Assuming no loss of helium, what would be the volume of the balloon when itwas launched from the ground, where the air temperature and pressure are 20.0°C and 101 kPa, respectively?(c) If the volume of the balloon when it was launched was 65.0 m3, how many molesof helium were lost during the balloon’s ascent?
A group of students have injected 26 g of a gas into an evacuated, constant-volume container at50 C and atmospheric pressure. The students want to heat the gas at constant pressure byallowing some of the gas to escape during the heating. What mass of gas (in grams) must bereleased if the temperature is raised to 400 C?
Liquid water is fed to a boiler at 24 °C and 10 bar and is converted at constant pressure to superheated steam at 250 °C, which flows at a rate of 5,000 m/h. Calculate the velocity of the produced steam (m/s), knowing it is discharged through a 10-cm ID pipe. of Answer: Liquid water is fed to a boiler at 26 °C and 10 bar and is converted at constant pressure to superheated steam at 200 °C, which flows at a rate of 5,000 m /h. Calculate the heat input, Q in kW, required for this process. Assume that the kinetic energy of the entering liquid is negligible. (Remember, the steam is discharged through a 10-cm ID pipe.) of Answer:

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