Astudent wants to prepare a 1.0-liter solution of a specific molarity. the student determines that the mass of the solute needs to be 30. grams. what is the proper procedure to follow?
(1) add 30. g of solute to 1.0 l of solvent.
(2) add 30. g of solute to 970. ml of solvent to make 1.0 l of solution.
(3) add 1000. g of solvent to 30. g of solute.
(4) add enough solvent to 30. g of solute to make 1.0 l of solution.

The answer is (4) Add enough solvent to 30.0 g of solute to make 1.0 L solution. The molarity is calculated using volume of the solution. When solute dissolving, the total volume will change. So the final volume of solution need to be 1.0 L.

The correct answer is weight.

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.