Chapter Assumptions
Use the following values for constants:NA = 6.02×10^23
R = 8.31 J/mol·K
k = 1.38×10–23 J/K.
In problems which require you to know the atomic weights of atoms or molecules, use the following:12.0 u for a carbon atom (C)4.00 u for a helium atom (He)1.00 u for a hydrogen atom (H)14.0 for a nitrogen atom (N)20.2 u for a neon atom (Ne)16.0 u for an oxygen atom (O)44.0 u for a carbon dioxide molecule (CO 2 )18.0 u for a water molecule (H 2 O)Chapter 19 Problems
Section Problems
Section 3 - Boyle’s and Charles’ gas laws
3.1 To prepare for a magic trick, a magician squeezes an inflated balloon into a small box of volume 0.0760 m^3. If the balloon
initially had a volume of 0.130 m^3 at an absolute pressure of 1.01×10^5 Pa, and the temperature of the gas inside it does not
change, what is the pressure in the balloon after it is squeezed into the box?
Pa
3.2 A scuba tank contains 2.83×10í^2 m^3 of
compressed air at an absolute pressure of
2.07×10^7 Pa. If all this air is released with no
change in temperature, so that it has a
pressure of 1.01×10^5 Pa (standard
atmospheric pressure), what volume does it
occupy?
m^33.3 A balloon is filled with air outside on a very cold day, at an absolute pressure of 1.01×10^5 Pa and temperature í12.0°C. The
balloon has a volume of 0.133 m^3. It is then brought indoors and its temperature increases to 22.0°C at the same pressure.
What is the balloon's volume indoors?
m^3
3.4 An experimental air compressor is designed to work by cooling the air to reduce its volume, without any change in pressure.
To reduce the volume of a quantity of air at 34.0°C to 87.0% of its original volume, what temperature does the air have to
reach?
K(^370) Copyright 2007 Kinetic Books Co. Chapter 19 Problems