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)
Answers to selected problems
Chapter 19 Answers
3.1 1.73e5 Pa
3.3 0.150 m^34.1 1.0e+22 molecules
4.3 (a) 44.0 u
(b) 4.40eí2 kg/mol
(c) 1.68e23 molecules5.1 (a) 7.2 moles
(b) 4.3e24 molecules
5.3 1.24e5 Pa
5.5 í54.5 mol
5.7 741 K
7.1 2.00eí22 m^3
9.1 1.1eí20 J
9.3 531 K