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3. Calculate the number average and weight average relative molecular mass for a sample of polystyrene made by blending eight separate fractions, each of which has a very narrow mass distribution as follows: | RMM | 15000 | 27000 | 39000 | 56000 | 78000 | 104000 | 120000 | 153000 | |---|---|---|---|---|---|---|---|---| | Mass / g | 0.10 | 0.18 | 0.25 | 0.17 | 0.12 | 0.08 | 0.06 | 0.04 | What will be the effect on ?? and ?? of adding 0.5 wt% styrene monomer to this polystyrene sample?

          3. Calculate the number average and weight average relative molecular mass for a sample of polystyrene made by blending eight separate fractions, each of which has a very narrow mass distribution as follows:

| RMM | 15000 | 27000 | 39000 | 56000 | 78000 | 104000 | 120000 | 153000 |
|---|---|---|---|---|---|---|---|---|
| Mass / g | 0.10 | 0.18 | 0.25 | 0.17 | 0.12 | 0.08 | 0.06 | 0.04 |

What will be the effect on ?? and ?? of adding 0.5 wt% styrene monomer to this polystyrene sample?

$3. Calculate the number average and weight average relative molecular mass for a sample of polystyrene made by blending eight separate fractions, each of which has a very narrow mass distribution as follows: | RMM | 15000 | 27000 | 39000 | 56000 | 78000 | 104000 | 120000 | 153000 | |—|—|—|—|—|—|—|—|—| | Mass / g | 0.10 | 0.18 | 0.25 | 0.17 | 0.12 | 0.08 | 0.06 | 0.04 | What will be the effect on ?? and ?? of adding 0.5 wt% styrene monomer to this polystyrene sample?$

Added by Angela B.

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