11 grade chemistry others
An aqueous solution contains 30% ( w/v ) of urea, what weight of urea will be present in 5 ml of solution?
An aqueous solution contains 30% ( w/v ) of urea, what weight of urea will be present in 5 ml of solution?
1 Answer
Askiitians Tutor Team
Approved Tutor Answer10 Months agoTo find the weight of urea in a 30% (w/v) solution, we first need to understand what this percentage means. A 30% (w/v) solution indicates that there are 30 grams of urea in every 100 milliliters of solution.
Calculating the Weight of Urea
Given that we have 5 milliliters of this solution, we can set up a proportion to find the weight of urea:
- 30 grams of urea is in 100 mL of solution.
- Let x be the weight of urea in 5 mL of solution.
Using the proportion:
x grams = (30 grams / 100 mL) * 5 mL
Now, calculate x:
x = (30/100) * 5 = 1.5 grams
Final Result
Therefore, the weight of urea present in 5 mL of the solution is 1.5 grams.
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