Infrared (IR) spectroscopy is used to identify functional groups within a molecule. Identify the peak that corresponds to the stretching vibration for the highlighted group. The compound is a carbonyl which is bonded to a phenyl ring and a hydrogen. The highlighted group is one of the C H bonds in the benzene ring. The IR spectra has five labeled peaks. A small broad peak at 3100 is A, two medium peaks near 2800 is B, a large sharp peak at 1700 is C, a smaller sharp peak at 1600 is D, and a medium sharp peak at 1200 is E. Which peak corresponds to the indicated stretch

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.