The equation for density, d, is d=*
where m is mass and V is volume.
What is the density, d. of a substance with a volume of V = 11.3 cm and a mass of m = 60.4 g ?

c is the answer because when something is left after something evaporates that shows the chemical change.

we need the questions , i may then you.

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.

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