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  • Answer please! Calculate the percentage composition in terms of mass of a solution obtained by mixing 400 g of a 25% solution and 300 g of 30% solution.

Calculate the percentage composition in terms of mass of a solution obtained by mixing 400 g of a 25% solution and 300 g of 30% solution.

  • Option 1)

    25.42

  • Option 2)

    28.92

  • Option 3)

    27.14

  • Option 4)

    26.53

 

Answers (1)

As we learnt

 

Mass percent of solution -

Mass percent = ((mass of solute)/(mass of solution) ) X 100

 

- wherein

 it is mass of solute present in 100 gram solution.

 

 mass of solute in 1st solution = 0.25 x 400 = 100g

mass of solute in 2nd solution = 0.3 x 300 = 90g

mass of solute in total mixtue = 190g

Total mass of the mixture = 700g

Mass % of mixture = \frac{190}{900}\times 100 = 27.14\%


Option 1)

25.42

Option 2)

28.92

Option 3)

27.14

Option 4)

26.53

Posted by

Vakul

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