Properties Of Matter Flashcards
1
Q
Number of moles equation
A
n = m / gfm
2
Q
Ideal gas law
A
PV = nRT
3
Q
Root mean square velocity
A
vrms = root 3PV/nM
vrms = root 3RT/M
4
Q
What is R?
A
R = gas constant
R= 8.314
5
Q
Mean free path
A
Lambda = V/Pi d^2 N root 2
Lambda = 1/ pi d^2 (N/V) root 2
6
Q
Real gas equation
A
(P + a/(v)^2 )(v-b) = RT
7
Q
Energy in system
A
🔺E = Q - W
8
Q
Energy in system conditions
A
- adiabatic Q=0 🔺E=-W
- constant volume W=0 🔺E = Q
- constant pressure 🔺P=0 W=P🔺V=nR🔺T
- constant temperature🔺T=0 W=nRTln(V1/V2)
- closed cycle 🔺E=0 Q=W
- free expansion Q=W=0 🔺E=0
9
Q
Kinetic energy of an atom
A
3/2kT
10
Q
What is k?
A
k = R/NA
k= 8.314
11
Q
What is Q?
A
Q=nCv🔺T
Q=cm🔺T
12
Q
What is C?
A
Cv = f/2 R
Cp = f/2 R + R
Where f is degrees of freedom
13
Q
What is the power radiated?
A
Prad = sigma epsilon A T^4
Or EAT^4 sigma
14
Q
What is the rate of change of heat?
A
dQ/dt = -kA dT/dy
dQ/dt = -v/n /3 ACv Dt/dy lambda
Where dy= length Where dT =difference in temp Lambda = separation = average speed A= area k= thermal conductivity
15
Q
What is the equation for thermal conductivity?
A
k = n/v /3 Cv lambda
