Amonomer needed to synthesize polyethylene terephthalate (pet), a polymer used to make plastic sheeting and soft drink bottles, shows a strong absorption in its ir spectrum at 1692 cm−1 and two singlets in its 1h nmr spectrum at 8.2 and 10.0 ppm. what is the structure of this monomer (molecular formula c8h6o4)?

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

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the pseudoscience are like beliefs, theories, or like practices that are considered scientific