CHEM 103 EXAM 2 Flashcards
1
Q
Internal energy
A
△u = q + w
2
Q
formula for when a gas expands against a constant external pressure
A
w = -P△V
3
Q
energy decreases:
energy increases:
A
1) -u△
2) +u△
4
Q
exothermic:
endothermic:
A
1) -q, -△ (heat flowing out of the system/ temp increasing)
2) +q, +△ (heat being absorbed/ temp decreasing)
5
Q
-w
+w
A
1) gas expanding/piston out
2) gas compressed/ piston in
6
Q
+u△=
-u△ =
A
1) energy absorbed
1) energy released
7
Q
△H =
A
△V + P△V
8
Q
c (heat capacity)=
A
m x s
9
Q
q (amount of heat)
A
mc△T
10
Q
speed of light (c)
A
3.00 x 10^8 m/s
11
Q
plancks constant
A
6.63 x 10^34 j/s
12
Q
wavelengths
A
nm
13
Q
frequency
A
hz
14
Q
longer wave lengths
A
lower frequency
15
Q
shorter wave lengths
A
higher frequency
16
Q
wave with low frequency
A
long wave length (vice versa)
17
Q
Energy (light)
A
E = hv
18
Q
hv=
A
KE + w
19
Q
KE
A
hv-w
20
Q
RH (Rydberg constant)
A
2.18 x 10^-18 J
