In the above HR diagram sketch, which star is a white dwarf?
A. A
B. B
C. C
D. D
E. E
Answer: E
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The boiling point of methanol is 65°C, and the boiling point of ethanol is 78°C. Which of the following statements is true?
A. At 40°C, the methanol reacts with the ethanol. B. At 70°C, you would have methanol gas and liquid ethanol. C. At 50°C, you would have methanol and ethanol as gases. D. At 90°C, you would have methanol and ethanol as solids. E. none of the above
The French-speaking Canadians are concentrated in which of the following locations?
A. the Maritime Provinces B. Quebec C. Saskatchewan D. Vancouver, B.C.
Population growth and wasteful water usage threaten to produce water shortages in many nations of the world
Indicate whether the statement is true or false
Imagine you are charged with building a facility run entirely by renewable resources (with the possible exception of backup power). How would you evaluate which sources have the most potential?
What will be an ideal response?