Thermodynamics I, II (equations)

Question 1

ideal gas law/ what the constants are.

Answer 1

PV=nRT
n= number of mol.
R= 8.31

Question 2

ATM to Pa

Answer 2

1 ATM = 1.013 x 10^5

Question 3

Celsius to K

Answer 3

0 c= 273 k

Question 4

Expansion Equations (3)

Answer 4

ΔL= α LΔT
ΔA= γAΔT
ΔV= βVΔT

Question 5

Power

Answer 5

P= ΣE/T =F/A

Question 6

Work

Answer 6

Fy=PAy

Question 7

first law of thermodynamics

Answer 7

ΔU=Q+W

Question 8

equations for isochoric process

Answer 8

Δv=0
Δw=0
ΔQ=ΔU

Question 9

isobaric process equatiosn

Answer 9

ΔU=Q+PΔV= Q+W

Question 10

isothermal process equations

Answer 10

Δu=0
Ti=Tf

Question 11

What ΔU can equal

Answer 11

3/2nRt (monatomic)
5/2nRt (diatomic)

Question 12

average kinetic energy

Answer 12

1/2mv^2=3/2kbT=1/3NmVrms^2

Question 13

Vrms

Answer 13

root 3kbT/m= root 3RT/M

Question 14

ideal monatomic gasses

Answer 14

u=3/2 nRT = N(1/2mvrms^2)=3/2NkbT

Question 15

ideal diatomic gasses

Answer 15

5/2 nRT
u=k trans+ k rot
= 5/2nRT

Question 16

phase changes

Answer 16

solid+liquid: Q=mHf
gas+liquid: Q=mHv

Question 17

phase equations

Answer 17

solid: Q=mCΔT
liquid: Q=mcΔT
Gas: Q=mCΔT

Question 18

efficiency

Answer 18

regular: e= W/Qh = Qh-Qc/Qh= 1-Qc/Qh
ideal: Qh=W

Question 19

entropy

Answer 19

ΔS=ΔQ/T

Question 20

rate of thermal expansion

Answer 20

Q/t=kA(th-tc/L)