Which best describes the structure of 2-butene?

A. a four-carbon hydrocarbon with a double bond between the first and second carbon atoms

B. a four-carbon hydrocarbon with a branching point at the second carbon atom in the chain

C. a four-carbon hydrocarbon with a double bond between the second and third carbon atoms

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

If a solution had a ph of 7 what is the solution