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Yr10
Chemistry
Chemical Calculations
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Cards (6)
How do you work out the molecular mass?
Work out the
atoms
of each
element.
Add the
mass number
of each
element
Multiply the number of atoms with the
mas number
of each
element.
Add the
mass
of each element together.
How do you calculate the % mass?
% of mass = (
AR
of
Z
x Number of atoms of Z) / Mr of the molecule x 100
How do you work out the simplest
formula
?.
How do you find the Moles?
Mass / Molar mass
How do you find the mass?
Moles
x
AR
How do you find the MR?
Mass
/ No of
moles
