Suppose a substance has a heat of fusion equal to 45 calg and a specific heat of 0.75
the liquid state. If 5.0 kcal of heat are applied to a 50-g sample of the substance at a
temperature of 24°C, what will its new temperature be? What state will the sample be in?
(melting point of the substance = 27°C; specific heat of the sold = 0.48 -
- boiling point of
the substance = 700ºC) Show your work.

i just learnt this recently but i need to look through my notes again

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.