Question

calculate the concentration of a solution by mass when 12 gram of Urea is dissolved in 160g of water

Answer 1

(m/m)% = Mass of solute / Mass of solution × 100
= [12 g / (12 g + 160 g)] × 100
= 6.97%

Solution is 6.97% concentrated.


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Answer 2

mass by mass concentration=
(mass of solute/ mass of solution)*100
{mass of solution is= mass of solute+ mass of solvent}
▪
$12\div (12 + 160) \times 100$
12g /( 12+ 160)* 100
you will get the answer!