Question

a solution of urea in water contains 20 grams of it in 120 grams of solution find out the mass percentage of the solution a]16.66 b] 15.66 c]16.69 d]15.69

Answer 1

Answer:

a ) 20/120×100= 16.66

the mass percentage of the solution is 16.66

Answer 2

Answer :

Mass of urea = 20g

Mass of solution = 120g

We have to find the mass percentage of the solution$.$

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◈ Mass percentage (%w/W) is defined as the amount of solute in grams present in 100g of solution.

ATQ,

Mass of solute = 20g

Mass of solution = 120g

➝ %w/W = 20/120 × 100

➝ %w/W = 2000/120

➝ %w/W = 16.67%

Option-A is the correct answer!