PLEASE HELP ME 1. What is the molality of a solution made up of 43.6 mol of CaCl2 dissolved by 13.5 kg of water?

2. How many moles of Na2CO3 are required to create 9.54 liters of a 3.4 M solution?

3. Which of these actions can result in decreasing the molarity of a solution?

Select all that apply.

A

adding solute

B

adding solvent

C

removing solute

D

removing solvent

Thanks Y'all:)

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

All forces cause motion? true or false

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.