For the following diagram regarding the enthalpy for the hydrogenation of 1-butene and 1,3-butadiene, which statement is true?

Which of the following are conjugated polyenes?

What is the Friedel-Crafts product in the following reaction? ++   AlCl3

The following molecule is conjugated:

The highest occupied molecular orbital (HOMO) for the allyl cation is best represented by which of the following molecular orbital (MO) diagrams?

If trying to convince someone to buy a new product that conserves energy, which of the follow is the best way to frame it so that more people purchase it? (Based on prior research)

Bonus Question worth 4-points: In class, we discussed contra asset accounts. I used a historical example to describe the typical language use of the term “contra.” Which country did the example relate to? (Hint: it’s not the US.)

Any suggestions for this course so far? 

4. (1 point) A fax machine dials a phone number that is typically busy 80% of the time. The machine dials it every 5 minutes until the line is clear and the fax is able to be transmitted. What is the probability that the fax machine will have to dial the number 9 times?

Asthma is classified into four categories: mild intermittent, mild persistent, moderate persistent, and severe persistent. Clinical features used to determine these categories include. Select all that apply.