In a robinson annulation, an a, b-unsaturated carbonyl compound reacts with a carbonyl compound to afford a (new) cyclic a, b-unsaturated ketone by a michael–aldol–dehydration sequence. draw the structure of the reactants that would combine to form the a ring of the steroid desoxy-19-nortestosterone (below) by a robinson annulation.

The clouds are grey and ground is wet. a quantitative b qualitative

Listen base your answer to the question on the information below.propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below.c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol.what is the correct structural formula for a molecule of methanethiol

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?