Which best describes solubility? the speed at which a substance dissolves
the ability of one substance to dissolve in another
the amount of surface area per a given mass
the temperature at which subtances become a mixture

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

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.