Question

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✍Question$ of the day✍


1. A solution contains 40 g of common salt dissolved in 320 mL of water of water. Calculate the mass concentration of the solution .(Remember units are different).

2. A solution is made by dissolving 50g of glucose in 250g of water .Calculate the concentration of the solution in mass percentage.️️✍️

Answer 1. =12.5%
2. 16.7%


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$\mathscr\purple{ALEXA}$

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Answer 1

Answer:

Mass of common salt (solute) = 40 g

Mass of water (solvent) = 320 g

To Find: The concentration of the solution = ?

Solution:

Mass of solution = 320 + 40

= 360 g

Concentration of solution = (mass of solute/Mass of solution) x 100

= (40/360) x 100

= 11.11 % (approx.)

Answer 2

Answer:

Hi Alexa...

1. Mass of solute - NaCl =40gm

Mass of solvent - water =320gm

Mass of solution =(40+320) gm

=360gm

Concentration in terms of Mass by mass percentage =mass of solute /mass of solution *100

=40/360*100%=11.11%

2. Mass of solute is 50g

mass of solvent is 250g

mass of solution is 50g + 250g=300g

mass %=(50 /300)×100

=16.67%

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