Summary Stoichiometry (Chemical calculations) - Grade 10, 11 and 12

Intro
Mole a mole defined as the amount of
is
the substance that contains the same
number of particles as 12g of the most
common isotope of Carbon 12 I
I mole 6,02 1023 particles
Avogadro's number Wa

Molar Massa is the mass in
grams
of one
mole of a substance and
it has 6,02 1023 Units

M Mass in
n Number grams
of moles
M Molar mass From periodic table
V Volume in decimeters cubed
c Concentration in mob dm 3
N Number of particles latomslmoleculeslions
Na Avogadro's Number 6,02 1023
Vm Molar Volume 22,4dm at STPCoor273151101.3kPa

, Basic Stoichiometry
Mass m n'IF m nM Masson

Volume 4 n Y MoleRatio nvm Volumel
Use for m
for Useforgass
gasses
Molecules
Concentration c n cu or c Fi Concentration
Use for solutions Reactions Use for solution

Number of n N N nNA Number
particles CN NA of particles

Problems
involving equations
1 Write a balanced chemical equation
for the reaction
2 Convert masses or volumes
given
to molesany
3 Use the mole ratio from the chemical
equation to convert from moles of one
substance to moles of another substance
4 Convert from moles back to masses
or volumes