An unknown hydrocarbon a with the formula c7h14 reacts with 1 molar equivalent of h2 over a palladium catalyst to give hydrocarbon b. hydrocarbon a also reacts with oso4 to give diol c. treatment of diol c with periodic acid gives ketone d and aldehyde e. when oxidized with kmno4 in acidic solution, a gives two fragments. one fragment is propionic acid, ch3ch2co2h, and the other fragment is ketone d. draw the structure of compound d.

D is 2-butanone.

Explanation:

The hydrocarbon A should contain a trisubstituted double bond as it gives an acid and a ketone on treatment with .The hydrocarbon A should contain only one double bond as it reacts with 1 molar equivalent of over palladium.The hydrocarbon A contains seven carbon atom. Therefore the ketone D should contain 4 carbon atoms as propionic acid ( 3 carbon atom) is produced as another fragment.Reaction and structure of D has been shown below.

Answer: abeexplanation:

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

Tolerance to high levels of salinity