A solution is made by dissolving 4.87 g of potassium nitrate in water
to a final volume of 86.4 mL solution.
What is the weight/weight % or
percent by mass of the solute?
Use 1.00 g/mL for the density of the solution.

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i believe the answer is a.

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.