Molarity,volume,moles, mass.
solutions
m = mass, M = formula mass, conc = concentration, M = molarity
Compound
Molarity
Volume
Mole
Mass(grams)
Formula mass = 102 atomic mass units
0.1M
20ml

mole=ConcXV
mole=0.1X0.02

=0.002

mass=moleXM
=0.002X 102
=0.204grams

Formula mass = 64atomic mass units
0.02M

V=mole/conc.
= 0.5/0.02
= 25litres

 
0.5
mass=moleXM
=0.5X 64
=32grams
Formula mass = 136 atomic mass units
Conc=mole/Vol.
= 0.01 / 0.05
0.2M
50ml

mole=m/M
mole=1.36/136

=0.01
1.36
Formula mass = 100 atomic mass units
0.8M

V=mole/conc.
= 1/0.8
= 1.25litres
1
mass=moleXM
=1X 100
=100grams
Formula mass = 161atomic mass units
Conc=mole/Vol.
= 0.2 / 0.12
1.67M
120ml

mole=m/M
mole=32.2/161

=0.2
32.2
Formula mass = 74 atomic mass units
0.4M
100ml

mole=concXvol
mole=0.4 X0.1

=0.04
mass=moleXM
=0.04X 74
=2.96grams
Formula mass = 80 atomic mass units
Conc=mole/Vol.
= 2 / 1
2M
1 litre

mole=m/M
mole=160 X80

=2
160
Formula mass = 100 atomic mass units
1.1.2M2

V=mole/conc.
= 4/1.2
= 3.33 litres

 
4
mass=moleXM
=4X 100
=400grams
Formula mass = 64 atomic mass units
Conc=mole/Vol.
= 0.01/ 0.001
10M
10ml

mole=m/M
mole=0.64X64

=0.01
0.64

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