What product is formed when CH3OCH2CH2C ≡ CCH2CH(CH3)2 is treated with each reagent: (a) H2 (excess), Pd-C; (b) H2(1 equiv), Lindlar catalyst; (c) H2 (excess), Lindlar catalyst; (d) Na, NH3? The earth is closer to the sun in November than in May. In which of these months does it move faster in its orbit? Explain why.
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