3. A student places 2.36 moles of acetic acid and 3.89 moles of sodium hydroxide in a beaker. They react to form sodium acetate (NaC2H302) and water. What mass of water will form?
HC2H3O2+NaOH + NaC2H3O2+ H2O

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

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.