Question

Science chemistry 200 g of common salt is dissolved in 800 g of water so as to make it's solution.calculate the concentration of common salt solution<br />​

Answer 1

Answer:

answer is 25%

Explanation:

Formula to calculate concentration is = Mass of solute / Mass of solution × 100

200 / 800+200 × 100

200/1000 × 100

1/5 × 100

20%

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Answer 2

Given : A solution contains 200 g of common salt in 800 g of water.

　

To find : Calculate the concentration of solution?

　

Applying formula :

1) Mass of solution = Mass of solute + Mass of solvent.

2) Mass percentage = Mass of solute/Mass of solution × 100.

　

Calculations :

→ Mass of solution = 200 + 800

→ Mass of solution = 1000

　

→ Mass percentage = 30/1000 × 100

→ Mass percentage = 0.03 × 100

→ Mass percentage = 3%

　

Therefore, 3% is the mass percentage of the solution.