Solution Concentration

What is the concentration of solution of 0.12 mol CuSO₄ in 200 cm³ of solution?

What is the mole of HCl in 1.5 dm³ of solution, if its concentration is 0.4 mol dm^-3?

What is the volume of 0.25 mol of ZnCl₂ solution, if the concentration is 0.05 mol dm^-3? (in dm³)

5.4 grams of NaOH was dissolved in 150 cm³ of its solution. What is the concentration? (Ar: Na = 23, O = 16, H = 1)

How many grams of NaCl must be dissolved to make 2.0 mol dm^-3 of its solution in 0.20 dm³? (Ar: Na = 23, Cl = 35.5)

Calculate the amount in moles of Ba(OH)₂. (hint: use the ratio of coefficients to calculate mole).

Calculate the concentration of Ba(OH)₂. Express your answer to 3 significant figures.

What is the general name given to the reactant that is not in excess?