Examine the TLC spot(s) present in each of the 4 vertical channels. Recall that the first three channels, from left to right, correspond to naphthalene, 2-bromo-2-methylpropane, and t-butylnaphthalene, respectively. Determine which compounds are present in your reaction sample.

r just means there's a number of carbon in teh chain. for example rcooh means that after x number of carbon, the chain ends with cooh.

explanation:

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

c is the answer because when something is left after something evaporates that shows the chemical change.

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