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Lecture notes

College level general chemistry class notes - 2021

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  • Module
  • General chemistry
  • Institution
  • Vanier College ( )

In these class notes, you can find information given by my teacher, Nicolas Deligiannis on types of reactions, significant figures, orbitals, gas principals (real and ideal), energies, quantum chemistry and lots and lots of history !

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Document information

  • January 9, 2022
  • 38
  • 2021/2022
  • Lecture notes
  • Nicolas deligiannis
  • All classes

Subjects

  • chemistry
  • generally chemistry
  • vanier college
  • cegep
  • chime général
  • chemistry notes
  • orbitals
  • reactions
  • pauli exclusion principle
  • erwin shrodinger
  • linus pauling
  • aufbauf principal

Written for

  • Vanier College ( )
  • Health Science
  • General chemistry
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,
, significant
Date : 23.08.21
-




numbers
✗ ample si Explanation :




5 →
1 ,
so →
7,500 →
7,5000--7 . . .
-

In a number , the zero is not significant
50 Once

becomes
put decimal the
-




.
→
2 , 50.0 → 3
, 50.00 →
4 . .
we a , number


significant . In the case of 50 .

,



we round to the nearest decimal . The



accuracy is . . .
[ 49.5
,
50 .
5)
With
•




a decimal ,
the zeros after the non
-




Zero numbers a re
significant .




5 1 The [ 0.045,0 )
-

→
0.5
→
7 0.05 7 of 0.05 is OSS
→
accuracy
. - -
. . .
.

, ,




The 0 050 [ 5)
'




0.050 →
2 ,
0 .
0500 → 3 .
.
.




accuracy
of .
. . . 0 .

0495,0 .
050


and 0.0500 . . -
[ 0.04995 , 0.05005 )
contexts :


-


The temperature outside is

28°C .
→
2 Significant
numbers .




1am km/h There
- -




travelling at 100 are 3
Sig .

fig because the accuracy is .
. .




→
3 numbers [ 99.5
significant , 100.5 )


There
>




30 students There
-




a re in a re infinite Sig fig because the number
my
-
.




classroom .
is exact . So . . . 30.000 - - -




Order of oppe ration :



Additions and Subtractions : In this case , we round off to the least

accurate number .




EXAMPLE .

-15.7+2.593-6.46=11.833 ( on calculator)

* Since the least accurate number is 15.913 Sig figs -
, the awnser is 11.8




Multiplications and divisions : You round off
your awnser to the least Sig .




figs given . .




EXAMPLE 16.78×0.0048=-1.39--0.051909352
:



* Since the number with the least Sig -


figs . is 0.004812 Sig figs) .
, the awnser is 0.052


EXAMPLE :
23.499-4.39×1.29=23.499 -


92.8=15.99 →
16.011 point after decimal )

, Date
temperature
-



.
24.08.21 .




Formulas :
conversion
T( F)
•
= IT c) +32




1- ( F)
•

1,8T / c)
☐
=
-132
-




Examples :
Solving steps :



I cook chicken at 400°F , T( F) 1,817°C ) -132
☐
=
a
-




what will be the temperature 400 =
1,817°C) -132
in Celsius ? T= 204,4°C


volumetric
- density
Formula :
Solving steps :




A) ① v=¥ñr3 ② f= F-
7- ✓ =
¥7120.033 m=f
f- v
-




✓ = 33 510cm
>
m =
9.87 ¥3 -




33510dm
'




m : mass in
grams
m= 2.675×1058×1100*099=11
✓ : volume in cm3( solids) 2451b¥
Or volume in m2 ( liquids) m= 581.5 lbs



Examples :
B) ① ② V= Ab -
h
-




A 40,0cm diameter 18in ✗
74k¥ V= 45.92cm ✗ 60.96cm -




Cannonball has a den =
45.92cm =
2989h cms

sity of
7.87g / cm3 .




"% ¥°"



✓
"
" ^^ " " " " be +" ^^ " "*
× ✗
"


in pounds (V =
¥1T r 3) =
60.96cm .
=
0.0606µm
③ 7-
g=
Aluminum density ¥4s
>




has a of ✓ =

. 6×10 -3g
2-
70g / cm ? If I cut out a
piece 2787h --
2.9¥
with a mass of
45.6mg and h =
6.06×10
-
•
Clm ✗
t¥m
dimensions
with the
following :




aetbyieoincnes
is the foil in
µm
,



?
now thick
CONVERSION TRICK !
•
632hm in m .
.
.
•
99.5MHz in H2
-




EXTRA . .
.
nano is ✗ 10-9 Mega is ✗ 10°
°

SO -
- -
632×10-9m So - . .
99.5×10 HE
A has fuel
consumption
car a


42.85¥ C) ① of - If 600km ✗ 0.6>214 F¥m×t£¥mi 98¥ .¥6pt× ✗ ×



the distance between 1-7×65-1
Mtl and Toronto is 600km ,
=
53.85$
how much would it cost to

travel to Toronto ?

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