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1.2 AMOUNT OF SUBSTANCE

Molecular
· Actual
number
of
each
type
of
atom

Formula
in
a
compound



Empirical
· Simplest
whole
number
ratio
of

Formula
atoms
in
a
compound



Avogadro's
· 6x1023
no.
of
atoms
of
12C
in
12g
of

constant
the
12C
isotope.


· Amount
of
substance
that
contains…

Page 2

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Kg x 1000 g
% Error
kPa x 1000
Pa
Pipette
×100

cm3 x 10 -6
m3

25

Burette
×100


cm3 ÷ 1000 dm3

Thermometer
×100


dm3 -3
m3

x 10
Expected -
×100

°C +273 K error !


!"## !" !"#$%"! !"#$%&'
% ATOM ECONOMY = ×100
!"!#$ !"##…

Page 3

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EQUATIONS

Acid + alkali Salt + water

Acid + base Salt + water

Acid + carbonate Salt + water + CO2

Acid + metal Salt + hydrogen


HCl = hydrochloric acid
HNO3 = nitric acid
H2SO4 = sulfuric acid
H3PO4 = phosphoric acid

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