Ethylene has the formula C2H4. Which of the following is a correct description of ethylene?

A) Ethylene has only single bonds.
B) Ethylene has one double bond.
C) Ethylene has one triple bond.
D) None of these is correct.


B

Environmental & Atmospheric Sciences

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the site of extensive _______ deposition. Fill in the blank(s) with the appropriate word(s).

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A) Africa B) Asia C) South America D) North America E) Australia

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Compared with falling on a wooden floor, a wine glass may not break when it falls to a carpeted floor because of the

A) lesser impulse in stopping. B) longer time to stop. C) both A and B D) neither A nor B

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