The answer is B. T<span>o protect the earth from harmful UV rays.</span>
Answer:
The common name for 2-butanone, a readily available solvent, is B-butanone
<span>STP
signifies standard temperature and pressure. This conditions are at 1
atmospheric pressure and 0 degrees Celsius. It has been said that at these
conditions, one mole of a gas molecule is equivalent to 22.4 liters of volume.
Therefore, the correct answer is option B. </span>
Dissolver is the answer i think because that is what disovling means