Question

a solution is prepared by adding 40 gram of sugar in 100 gram of water. Calculate the Concentration in terms of mass by mass percentage solution.

Answer 1

mass of solute = 40g
mass of water =100g
Concentration = mass of solute /mass of solution*100
mass of solution= 140 g (solute +solvent)
So 40/140*100=28.57
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Answer 2

☺️$\textbf{Hey mate! here's your answer!}$☺️

Since,

Mass of solute ( sugar ) = 40 gm

Mass of solvent ( water ) = 100 gm

then,

solution = solute + solvent

=> solution = ( 40 + 100 ) gm

=> solution = 140 gm

thus ,

concentration of solution percentage

$= \frac{mass\: of \: solute }{mass \: of \: solution} \times 100$

$= \frac{40}{140} \times 100$

= 28.57% approx.

$\textbf{hope it is helpful}$ ✌️!