Styrofoam packing peanuts are filled with air pockets. When dissolved in acetone, the air trapped in the Styrofoam will be released. Thus, when acetone has evaporated, remaining polystyrene will be much denser. a) Branched LDPE is soft and not very strong and hence has a low resistance to being cut. Therefore, branched LDPE cannot be used in this application. b)… Read more →
Author: sher0038
Application Exercise 15/02/17
The Earth is not cooling rapidly because of the presence of greenhouse gases such as CH4, H2O, CO2, nitrous oxides. These greenhouse gases absorb infrared radiation, which warms the Earth, increasing the Earth’s average temperature. The statement is incorrect. From the photo, it seems that there is more snow cover during this winter, which indicates that the climate conditions has… Read more →
Components of Air & PSI ~~
It was interesting to realise that the concentration of water vapour differs significantly under different conditions. ~~ The PSI values are IMPORTANT. :)) Read more →