Chapter 19 Flashcards

1
Q

Two objects
that are separately in thermal equilibrium with
a third object are in thermal equilibrium with
each other.

A

Zeroth law of thermodynamics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Two objects are defined to have the same

temperature if they are

A

in thermal equilibrium

with each other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

5/9 (T in F - 32)

A

T in C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

9/5 (T in C + 32)

A

T in F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

If you plot a graph with Fahrenheit temperatures
along the horizontal axis and the corresponding
Celsius temperatures along the vertical axis, the
slope of the equal-temperature line will be

A

0.56 C/F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Rankine (R)

A

F + 459.67

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

As temperature increases, the amplitude

A

increases, causing the overall

object as a whole to expand.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

When the

temperature changes by T, the fractional change in length L is

A

proportional to T.  is called the coefficient of linear expansion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Alpha units

A

C^-1 and K^-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

a nickel steel
alloy notable for its uniquely low
coefficient of thermal expansion

A

Invar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

coefficient of areal expansion

A

Y

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

coefficient of volume expansion

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A sheet of metal has a star shaped hole.
What happens to the distance, d, when the
temperature of the sheet is increased?

A

Increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

consists of two pieces of metal,
with different coefficients of expansion, bonded to
each other.

A

Bimetallic Strips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

used to convert a temperature change into

mechanical displacement

A

Bimetallic Strips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Used to increase the magnitude of the displacement in a confined space

A

Bimetallic Strip Coils

17
Q

As the temperature of water increases from 0ºC to 4 ºC, it

A

contracts and its density increases

18
Q

Above 4 ºC, water exhibits

A

the expected expansion with

increasing temperature

19
Q

The maximum density of water is

A

1000 kg/m3 at 4 ºC

20
Q

How much water spills out of the flask?

A

Both Volume expansion formulas

21
Q

At what temperature will the bar break?

A

Y = (F/a) / (dLf / L)

22
Q

Properties of Gases

A
  1. No fixed volume or pressure

2. Expands to fill the container

23
Q

Collection of atoms or molecules that move randomly
– Molecules exert no long-range force on one another
– Molecules occupy a negligible fraction of the volume of their
container

24
Q

NA =

A

6.022 X 10^23 atoms

25
Mass of Atom
Molar mass / NA
26
PV = Constant
Boyles
27
V/T = Constant
Charles
28
P/T = Constant
Gay-Lussac
29
An ideal gas is confined to a container with constant volume. The number of moles is constant. By what factor will the pressure change if the absolute temperature triples?
3
30
An ideal gas is confined to a container with adjustable volume. The number of moles and temperature are constant. By what factor will the volume change if pressure triples?
1/3
31
A mass of He gas occupies a volume V at standard temperature and pressure. What volume is occupied if the mass is halved, the absolute temperature doubled, and the pressure increased by a third?
(3/4)V
32
another quantity commonly determined for gas mixtures. It is defined the number of moles of one substance relative to the total number of moles in the mixture
Mole Fraction
33
The sum of the partial pressures of the gases in a mixture = the total pressure, or P = PA + PB + PC + ... Pi where Pi = the partial pressure of component i.
Dalton's Law