Polarity and Boiling Point: The polarity of the molecules determines the forces of attraction between the molecules in the liquid state. Polar molecules are attracted by the opposite charge effect (the positive end of one molecule is attracted to the negative end of another molecule.
The five disadvantages of solar power. It's intermittent. Solar energy is only available when the sun is shining. It's low efficiency. It requires large areas of land. It's not completely free of environmental impact. Ultrapure polysilicon is now scarce. It's high cost.
What is the main problem encountered with solar energy resources?A) Causes the change of river profiles and temperatures, adversely affecting fishes and other aquatic life. B) Ground subsidence due to the removal of hot underground water. C) Need several plants located in regions of consistent wind, leading to unattractive vistas. D) Cost of the technology today is the highest compared to all other energy resources. E) All of the above.