Question

10g of copper sulphate has been dissolved in 390 g of water at 293 k . calculate mass by mass percentage of the solution at this temperature .

Answer 1

hi here is your answer!

Mass of solute=10 g

mass of solvent=390 g

mass of solution=mass of solute+ mass of solvent

                           = 400 g

mass%=(mass of solute/mass of solvent)*100

=>(10/400)*100

=>2.5%

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Answer 2

mass of solute + mass of solution = mass of solvent

10g+390g= 400g

mass of percentage= mass of solute ÷mass of solvent ×100

=10g÷400×100

2.5percentage