How many electrons are gained or lost in the following half-reaction? Zn ? Zn+2
A. 2 electrons are lost
B. 1/2 electron is gained
C. 1/2 electron is lost
D. 2 electrons are gained
E. 4 electrons are gained
Answer: A
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Which of the following gives the correct order of solubility in water?
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A. A B. B C. C D. D
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