Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. the density of liquid oxygen at its boiling point

The density of liquid oxygen at its boiling point is 1.14 kg/L , and its heat...

Free

50.1K

Verified Solution

Question

Chemistry

The density of liquid oxygen at its boiling point is 1.14 kg/L ,and its heat of vaporization is 213 kJ/kg .

How much energy in joules would be absorbed by 2.0 L of liquidoxygen as it vaporized?

Express your answer to two significant figures andinclude the appropriate units.

Water's heat of fusion is 80. cal/g , and its specific heat is1.0calg??C .

Some velomobile seats have been designed to hold ice packsinside their cushions. If you started a ride with ice packs thatheld 1400 g of frozen water at 0 ?C , and the temperature of thewater at the end of the ride was 32 ?C , how many calories of heatenergy were absorbed?

Express your answer to two significant figures and include theappropriate units.

Water's heat of fusion is 80. cal/g , its specific heat is1.0calg??C, and its heat of vaporization is 540 cal/g .

A canister is filled with 390 g of ice and 100. g of liquidwater, both at 0 ?C . The canister is placed in an oven until allthe H2O has boiled off and the canister is empty. How much energyin calories was absorbed?

Express your answer to two significant figures and include theappropriate units.

Answer & Explanation Solved by verified expert
3.5 Ratings (626 Votes)

1.

mass of oxygen liquid = D*V

                       = 1.14*2 = 2.28 Kg

DHvapourisation = 213 Kj/kg

Amount of heat absorbed = DHvap * m

                        = 213*2.28

                       = 485.64*10^3 joule.

2.


Water's heat of fusion = 80. cal/g

specific heat = 1.0 cal/g⋅∘C .

mass of water = 1400 grams

Heat absorbed (q) = 1400*1*(32-0)+1400*80 = 156800 cal

             = 1.6*10^5 cal


3.
Water heat of fusion = 80. cal/g

specific heat = 1.0 cal/g⋅∘C .

water heat of vaporization = 540 cal/g

Heat absorbed (q) = mice*DHfus + mwater*s*DT + m*DHvap

  
             = 390*80 + (390+100)*1*(100-0)+490*540

             = 3.4*10^5 cal
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: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Salmon Weights: Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed....

Basic Math
Q

Al(OH)3 (s) + H?SO4 (aq) ? Al2(SO4)3(aq) + H?O(l)Express your answer as a chemical equation....

Biology
Q

1 2 3 5 3 3J 4 2 5 J Maximum acceleration of block A...

Physics
Q

103 A voltmeter of 998 ohms resistance is connected to a cell of emf 2...

Physics
Q

B Figure Parallelogram ABCD 4x 6 in A y 10 in E 6y in C...

Geometry
Q

y 4 Find the output y when the input x is 4 y 8 Vrite...

Basic Math
Q

For the fiscal year 2007 a tax authority audited 1 61 of individual tax returns...

Statistics
Q

ork 1111 Polynomial Functions Homev list n 1 K Use a graphing utility to ap...

Algebra
Q

Your roommate let you borrow $112 to buy the PS5 2...

Accounting
Q

Exercise C Given the following data, prepare a schedule that shows contribution margin, contribution to...

Accounting
Q

1.2. ... 4. True or false only: 1. T/F The proprietors promise to pay to...

Accounting
Q

alibri (Body) 14 AA Aa -' abex, x2a-e A Paragraph Styles 1. What is the...

Accounting