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Chemistry
Developing fuels
DF - Equations
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Cards (8)
C-> K
+273
K-> C
-273
E
=
E=
E
=
m
.
c
.
T
m.c.T
m
.
c
.
T
E= change in
thermal energy
(kJmol^-1)
m=
mass
of
water
(g)
c=
specific heat capacity
of
water
(4.18Jg^-1K^-1)
Delta T=
change
in
water temperature
(k)
Volume of gas = moles of
gas
x
24dm
^3
pV=
nRT
p=
Pressure
(
Pa
)
V=
Volume
(
cm
^
3
)
n= Amount of
gas
(
moles
)
R=
Gas constant
T=
Temperature
(
K
)
percentage yield= (
actual
yield /
theoretical
yield) x
100
E
=
E=
E
=
h
v
hv
h
v
E= Energy
(J)
h=
Planck's
constant
v =
Frequency
(Hz)
c=vλ
V= Frequency (Hz)
C=
Speed
of light
λ =
Wave
length (m)
How do you calculate bond enthalpy from frequency?
Frequency -> energy
E= hv
Joules
->
Kilojoules
÷1000
Kilojoules
->
kJ mol-1
kJ x 6.02x10
^
23
