A student sttempts to prepare a 1.25 M stock solution of sodium hydroxide (NAOH) for the lab. He miscalculates and measuresd out the wrong mass of sodium hydroxide. He ends up adding 225g NaOh to 5L of water.
a. What is the concentration of the solution he prepared?
b. Does the student need to add solvent or solute to obtain 1.25M? Why?
c. How much solvent would need to be added to dilute this solution to 0.045M?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?