Draw line structures for the cis and trans configurations of CH3CH2CH=CHCH3.

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely. analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?

The ba(oh)2 dissociates as ba+2 + 2 oh-. h2so4 dissociates as 2 h+ + so4 -2. write a balanced equation for this reaction.

Burmese pythons are a large breed of snake that were brought over to the u. s. as an exotic pet in the 1970s. they are a species of snake native to asia. some owners set the snakes free into the wild after learning that they were too difficult to care for. the florida everglades is a perfect habitat for the burmese python. this invasive species has thrived in the everglades and its population has grown exponentially since the 1990s. in this habitat that at one time had no burmese pythons living in it, now has a population estimated between 30,000-100,00. pythons are predatory animals that feed on animals in the everglades such as rabbit, deer, raccoons, and even alligator. these animals have experienced devastating effects to their populations. with such a drastic population increase in burmese pythons, predict what the population of this biological change to the florida everglades ecosystem has on the population of the other animals.