Calculate the percentage composition in terms of mass of solution obtained by mixing `300 g` of a `25%` and `400 g` of a `40%` solution by mass.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 20% and 300 g of a 30% solution by weight.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 20% and 300 g of a 30% solution by weight.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 20% and 300 g of a 30% solution by weight.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 30% and 300 g of a 20% solution by weight.

Percentage composition in terms of mass of a solution obtaned by mixing 300g 25% solution of NH_(4)NO_(3) with 400g of 40% solution of solute 'X'

Calculate the concentration of a solution obtained by mixing 300 g of 25% by weight solution of NH_(4)Cl and 150 g of 40% by weight solution of NH_(4)Cl .