Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. a certain substance x has a normal boiling point o

A certain substance X has a normal boiling point of 101.5°C and a molar boiling point...

90.2K

Verified Solution

Question

Chemistry

A certain substance X has a normal boiling point of101.5°C and a molar boiling point elevation constantKb = 1.49 °C/m. A solution is preparedby dissolving some urea (NH2)2CO in 200 g ofX. This solution boils at 104.4°C. What is the mass ofurea that was dissolved in the solution?

A. 23.4 g
B. 6.48 g
C. 584 g
D. 9.73 g
E. 1.95 g

Question 10 of 10

1.0 Points

The normal freezing point of a certain liquid Y is-8.70°C, but when 24.17g of urea (NH2)2CO aredissolved in 550 g of Y, it is found that the solutionfreezes at -13.7°C instead. Use this information to calculate themolal freezing point depression constant Kf ofsubstance Y.

A. 0.15°C/m
B. 3.7°C/m
C. 31°C/m
D. 6.8°C/m
E. 5.0°C/m

Answer & Explanation Solved by verified expert
4.2 Ratings (538 Votes)
9 We know that T b Kbx m Where T b elevation in boiling point boiling point of solution boilinging point of pure solvent 1044    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Biology
1.2K views

What is the Hardy-Weinberg principle for a gene with two alleles in a tetraploid?

Chemistry
1.2K views

Peak intensity from a mass spectrum gives you what information about a compound? -The relative abundance of...

Mechanical Engineering
1.2K views

If the specific weight of a liquid is 8.1 kN/m­­­­3, what is its density? If the specific...

Biology
1.2K views

Which of these is LEAST likely to be a feature of a biofilm?easily permeated by...

Basic Math
1.2K views

Use transformations of the graph of f(x)=x to determine the graph of the given function.g(x)=(x-6)*****Select...

Calculus
1.2K views

Use the Intermediate Value Theorem to show that there is a root of the given...

Algebra
1.2K views

4 Her izginin e imini belirlemek i in grafi i kullan n 1 1 3...

Accounting
1.2K views

Laramie Corporation has acquired a property that included both land and a building for $520,000....

Accounting
1.2K views

21. An acceptance with variation of the offer is: (1 Point) Original offer Counter-offer -...

Accounting
1.2K views

1) Depreciation computed under doubledecliningbalance will decrease each year because: A.the book value used in...

Finance
1.2K views

Investment question Let Var(rM)=0.05 be the variance of the return on the market. Assume CAPM...

Finance
1.2K views

Getrich has 7.2 million shares outstanding and a current share price of $1.1 per share....