Isotopes
Isotopes : atomic masses are actually average atomic masses
Isotope :
"
C
"
C (124×0.9889)+(13.0034×0.011)
L divide
by 100
Natural
: 98.84% 1.11% the NA
Abundance
Carbon
=
12.014 -
D
weight
Mass : 124 13.00344
To Calculate Unknown Natural Abundance : % ✗ =/ 00% %A
-
To Calculate Unknown Mass :
( U X NA ) + ( ✗U X NA) =
total units
6.022×1023
Avogadro's Number :
molecules = 1 mole
Molar Mass :
molar mass is of element is mass in 1m01 .
Formulas
molecular .
empirical structural
gives the gives of
•
simplest whole
actual
give the number
•
atoms and
•
number of each atom number ratio of atoms the structure (connectivity)
CHO ↳
in a compound ↳
CHZCOOH or µ
-
-
o -
H
LD CzHyOz
•
there are more
£M="""""""^
Hill Notation
"" °" """"°
1. Carbon
GDC
molecular
2. Hydrogen Molar Mass
n =
formula 's 3. Alphabetical (A.B. c) Empirical Formula Mass
↳ you need this for molecular
-
* molecular Sempiral CAN be the Mass percent :
same sometimes depends on if mass % of an = mass of element * 1m01 of compound
✗ 100g
.
element
All proportions mass of 1m01 of compound
Isotopes : atomic masses are actually average atomic masses
Isotope :
"
C
"
C (124×0.9889)+(13.0034×0.011)
L divide
by 100
Natural
: 98.84% 1.11% the NA
Abundance
Carbon
=
12.014 -
D
weight
Mass : 124 13.00344
To Calculate Unknown Natural Abundance : % ✗ =/ 00% %A
-
To Calculate Unknown Mass :
( U X NA ) + ( ✗U X NA) =
total units
6.022×1023
Avogadro's Number :
molecules = 1 mole
Molar Mass :
molar mass is of element is mass in 1m01 .
Formulas
molecular .
empirical structural
gives the gives of
•
simplest whole
actual
give the number
•
atoms and
•
number of each atom number ratio of atoms the structure (connectivity)
CHO ↳
in a compound ↳
CHZCOOH or µ
-
-
o -
H
LD CzHyOz
•
there are more
£M="""""""^
Hill Notation
"" °" """"°
1. Carbon
GDC
molecular
2. Hydrogen Molar Mass
n =
formula 's 3. Alphabetical (A.B. c) Empirical Formula Mass
↳ you need this for molecular
-
* molecular Sempiral CAN be the Mass percent :
same sometimes depends on if mass % of an = mass of element * 1m01 of compound
✗ 100g
.
element
All proportions mass of 1m01 of compound
