Please help solve these with dimensional analysis steps/ format? What would be the molarity of a solution made by dissolving 4.50 grams of potassium sulfate towhat would be the molarity of a solution made by dissolving 4.50 grams of potassium sulfate tomake a 250.0 mL solution?How many milliliters of a 0.500 M solution can be prepared by dissolving 7.00 grams of sodiumchloride in water?4.5. How many grams of potassium bromide would be recovered by evaporating 653 mL of 20.0%potassium bromide solution to dryness? The density of the solution is 1.11 g/mL.3. What will be the percent composition (solute and solvent) by mass of a solution made bydissolving 20.0 grams of sodium sulfate in 75.0 grams of water?1.How many mole of nickel(II) nitrate are required to prepare 5.00 L of a 0.025M solution?2.

As per our guidelines we can only solve first three sub-parts. Please resubmit the other questions as next question.1. Percentage by mass = (mass of solute ÷ mass of solution ) x 100 Mass of solute = 20 g Mass of solvent = 75 g Mass of solution = 20 + 75 = 95 g Percentage by mass of solute= (20 g÷ 95 g)x100 = 21.05 % Percentage by mass of solvent = (75 g÷ 95 g)x100 = 78.94 % 2. Number of moles = molarity x volume in litre = 0.025 M x 5 L = 0.125 moles 3. Number of moles of potassium sulphate = 4.50g ÷ 174.25 g/mol = 0.0258 moles Molality = number of moles of solute ÷ volume of solution in litre = 0.0258 moles ÷ 0.25 L = 0.1032 M