Achemistry student mixes 5 grams of sodium chloride (nacl) in 100 ml of water and stirs until all of the salt is dissolved. once dissolved, the student measures the electrical conductivity of the solution. an additional 5 grams of nacl is then dissolved in the solution. which statement most accurately describes how the additional five grams of salt will affect the electrical conductivity of the solution? a) the conductivity of the solution will increase because more ions are being added to the solution. b) the conductivity of the solution will decrease because salt is an insulator and more is being added. c) the conductivity of the solution will decrease because the concentration has changed--the solution is more dense. d) the conductivity of the solution will increase because additional electrical potential is being added to the solution.