Vinegar is commonly sold as a 5 percent (v/v) solution of acetic acid in water. this measurement means which of the following?
5 grams of acetic acid/100 grams of solution
5 grams of acetic acid/100 grams of water
5 ml of acetic acid/100 ml of solution
5 ml of acetic acid/100 ml of water

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.