Question 5 (5 points) (08.02 LC)
Which of the following is the correct formula to calculate percent by mass? (5 points)
[Mass of solution (g) + mass of solute (g)] x 100
Oь
[Mass of solute (g) - mass of solution (g)] x 100
O
[Mass of solute (g) = mass of solution (g)] x 100
Od
[Mass of solution (g) = mass of solute (g)] x 100

option a

Explanation:

you are very welcom

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.

0.88m hope i am correct : )