Three salt solutions are to be used in an experiment, a 0.5g/dmº solution (solution 1), a 1.5g/dm3 solution (solution 2) and a 2.5g/dm3 solution (solution 3). Which solution will contain the fewest salt
particles in a particular volume?
solution 2
solution 1
solution 3

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled