Calculate the total ion concentration in a 0.65 M solution of CH₃CH₂OH.

A 300.0 mL solution was formulated by dissolving 5.50 g NaCl, 2.35 g NaOH, and 3.41 g NaBr in water and diluting to the specified volume. Calculate the concentration (in molarity) of the ions present in the solution.

Calculate [Ca²⁺] when 50.0 mL of 0.40 M CaCl₂ and 80.0 mL of 0.15 M CaCl₂ solutions are mixed. Assume volumes are additive.

The dissolution reaction shown below:

KMnO₄ (s) → K⁺ (aq) + MnO₄^- (aq) 

What are the concentrations of the two ions if the KMnO₄ solution is 1.20 M.

You dissolve 3.525 g sample of MgCl₂ in enough water to make 640 mL of solution. Calculate the magnesium ion concentration of this solution.

Assuming that volumes are additive, find the concentration of each ion in the solution obtained when 3.80 g of MgBr₂ is dissolved in 200.0 mL of 0.0150 M NaBr solution.

What is the molarity of NO₃^– in each solution?

(i). 0.250 M NaNO₃

(ii). 0.250 M Ba(NO₃)₂

(iii). 0.250 M Al(NO₃)₃