Posted by **Tracy** on Monday, September 24, 2007 at 10:06am.

I am doing a lab and there is one question I can't get. We have the enthalpy of fusion of crystalline polyeythlene, mass, onset temperature and energy required for a phase change of both low density polyethylene and high density polyethylene. They as to calculate the percent crystallinity of both by calculating the fraction of crystalline polymer in the samples. I really have no clue how to go about this I'm stumped. Any help would be greatly appreciated. Thanks.

## Answer this Question

## Related Questions

- Thermodynamics - I am doing a lab and there is one question I can't get. We have...
- Thermodynamics - 5 pounds of an ideal gas with R=38.7 and K=1.668 have 300Btu of...
- Chemistry - Calculate the heat (in kJ) required to transform 58.60 g of ...
- Chemistry - Heat of Fusion of Ice - Conclusion question(s) from a lab we did to ...
- 12 Chemistry - What is the molar enthalpy of combustion of magnesium? This was ...
- CHM - Heat of fusion (¦¤Hfus) is used for calculations involving a phase change...
- chemistry - Is this statement accurate? the boiling point of the distilled water...
- Physics - One gram of water is placed in a cylinder and the pressure is ...
- Physics - One gram of water is placed in a cylinder and the pressure is ...
- Physics - One gram of water is placed in a cylinder and the pressure is ...

More Related Questions