Draw the structure of cis−jasmone, a natural product isolated from jasmine flowers, formed by treatment of alkyne a with h2 in the presence of the lindlar catalyst. click the "draw structure" button to launch the drawing utility. 1252a

See below.  

Step-by-step explanation:

Hydrogenation of an alkyne in the presence of a Lindlar catalyst produces a cis-alkene.

Thus,treatment of the acetylenic cyclopentenone with hydrogen and Lindlar catalyst gives 3-methyl-2-[(Z)-pent-2-enyl]cyclopent-2-en-1-one

(cis-jasmone).

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error