In a hydrocarbon's name, what does the suffix –yl indicate about the molecule?

there is a double carbon bond in the molecule.

there is a double hydrogen bond in the molecule.

there is a substituent in the molecule.

there is a triple carbon bond in the molecule.

What percentage of energy used in the u.s is produced from fossil fuels

Northern was a learned a fairly cold climate caused by see one from the atlantic ocean, but se was real and tends to be much warmer, sonia look good causes difference. a.cool wins cannot blow across a leg into the south mountains, b.prevent cold air from blowing over into south sea,c.the south is at much higher elevation, so it is closer to the sun, d.suppose early and has a sperience a drastic climate change in the past few years.

Why would a doctor most likely restrict a patient's contact with other people while the patient receives internal radiation