Is it solid or aqueous?

K2CO3(aq) + Pb(NO3)2(aq) = PbCO3(s) + KNO3(aq)

your parents i think this could be it

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

answer///carbon;

answer carbon and three oxygen atoms;