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Question 4 (Total 18 marks). =CH H с -C- H H n (a) Calculate the molecular...
1-Calculate the molecular weight of the repeat unit (monomer) for polystyrene (above) (2 marks) 2-Using the...
1-Calculate the molecular weight of the repeat unit (monomer)
for polystyrene (above) (2 marks)
2-Using the table below, calculate the degree of polymerisation
for polystyrene
Molecular weight range (g/mol)
Number fraction,xi
500-1000
0.02
1000-3000
0.13
3000-5000
0.25
5000-10000
0.41
10000-25000
0.15
25000-50000
0.04
3-Which crystal type would be expected for Nickel Oxide (NiO,
Ni2+ ionic radius = 0.069nm, O2- ionic radius
= 0.14nm) (2 marks)
4-In order to save weight, a composite component is to be made
of aligned fibreglass...
can you please do parts a b c and d with working out. need it in...
can you please do parts a b c and d with working out.
need it in the next 40 minutes thank you
(a) Which crystal type would be expected for Nickel Oxide (Nio, Ni2+ ionic radius = 0.069nm, 02-ionic radius = 0.14nm) (2 marks) (b) In order to save weight, a composite component is to be made of aligned fibreglass and Epoxy resin to replace an aluminium component. The moduli of the fibreglass and epoxy are 85 GPa and 2.4...
1-Calculate the molecular weight of the repeat unit (monomer)
for polystyrene (above) (2 marks)
2-Using the table below, calculate the degree of polymerisation
for polystyrene
Molecular weight range (g/mol)
Number fraction,xi
500-1000
0.02
1000-3000
0.13
3000-5000
0.25
5000-10000
0.41
10000-25000
0.15
25000-50000
0.04
3-Which crystal type would be expected for Nickel Oxide (NiO,
Ni2+ ionic radius = 0.069nm, O2- ionic radius
= 0.14nm) (2 marks)
4-In order to save weight, a composite component is to be made
of aligned fibreglass...
can you please do parts a b c and d with working out.
need it in the next 40 minutes thank you
(a) Which crystal type would be expected for Nickel Oxide (Nio, Ni2+ ionic radius = 0.069nm, 02-ionic radius = 0.14nm) (2 marks) (b) In order to save weight, a composite component is to be made of aligned fibreglass and Epoxy resin to replace an aluminium component. The moduli of the fibreglass and epoxy are 85 GPa and 2.4...
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