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A hot air balloon with a diameter 20 m initially contains air at STP on a cool September morning. When the air is heated to 70 degrees C, what mass of air is pushed out of the balloon? This is roughly the mass that can then be lifted by the balloon. (Potentially useful information: The molar mass of air is about 30 g/mol. The surface area and volume of a sphere are A = ((4pi x radius^(2)) and V=((4/3pi x radius^(3))

A hot air balloon with a diameter 20 m initially contains air at STP on a cool September morning. When the air is heated to 70 degrees C, what mass of air is pushed out of the balloon? This is roughly the mass that can then be lifted by the balloon. (Potentially useful information: The molar mass of air is about 30 g/mol. The surface area and volume of a sphere are A = ((4pi x radius^(2)) and V=((4/3pi x radius^(3))

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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A hot air balloon with a diameter 20 m initially contains air at STP on a cool September
morning. When the air is heated to 70 degrees C, what mass of air is pushed out of the balloon?
This is roughly the mass that can then be lifted by the balloon.
(Potentially useful information: The molar mass of air is about 30 g/mol. The surface area and volume of a sphere are
A = ((4pi x radius^(2)) and V=((4/3pi x radius^(3)) 

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