Question

determine the percent concentration of a solution obtained by mixing 300 g of a 25% and 400g of a 40% solution​

Answer 1

Answer:

Hey mate here is your answer.//

Explanation:

Mass of solute (1) = 300g × 25/100

                             = 75g

Mass of solute (2) = 400g ×40/100

                             = 160g

Total masss of solute = 75+160

                                  = 235g

Total mass of solution = 300 + 400

                                   = 700g

% composition by mass of solute = mass of solute / total mass of solution ×100

                                                     = 235/700 ×100

                                                     = 33.57% of solute

% composition by mass of solvent = 100 - 33.57

                                                      = 66.43%

Hope it helps...

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