After treatment with Caro’s acid, there is normally a residual amount of CN– remaining in the aqueous solution of 9.3 mg/liter. Convert this to molarity (moles CN–/liter)

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

Can someone me with 6 to 10 plz this is for masteries test.

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.