Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. the heat energy associated with a change in temper

The heat energy associated with a change in temperature that does not involve a change in...

50.1K

Verified Solution

Question

Chemistry

The heat energy associated with a change in temperature thatdoes not involve a change in phase is given by

q=msΔT

where q is heat in joules, m is mass in grams,s is specific heat in joules per gram-degree Celsius,J/(g⋅∘C), and ΔT is the temperature change in degreesCelsius. The heat energy associated with a change in phase atconstant temperature is given by

q=mΔH

where q is heat in joules, m is mass in grams,and ΔH is the enthalpy in joules per gram.

Physical constants

The constants for H2O are shown here:

Specific heat of ice: sice=2.09 J/(g⋅∘C)

Specific heat of liquid water: swater=4.18 J/(g⋅∘C)

Enthalpy of fusion (H2O(s)→H2O(l)): ΔHfus=334 J/g

Enthalpy of vaporization (H2O(l)→H2O(g)): ΔHvap=2250J/g

Part A

How much heat energy, in kilojoules, is required to convert 63.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?

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

Part B

How long would it take for 1.50 mol of water at 100.0 ∘C to beconverted completely into steam if heat were added at a constantrate of 15.0 J/s ?

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

Answer & Explanation Solved by verified expert
3.6 Ratings (442 Votes)
    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

Advance Math
1.2K views

Let M(x, y) be \"x has sent y an e-mail message\" and T(x, y) be...

Electrical Engineering
1.2K views

discuss LADAR based automatic target recognition.

General Management
1.2K views

Analyze and discuss Amazon’s approaches and successful implementation of processes. How can you embed some of...

Physics
1.2K views

A particle moves in a straight line and its position x at time t is...

Physics
1.2K views

The radius of circle the period of revolution initial position and sense of revolution are...

Physics
1.2K views

A monochromatic light is travelling in a medium of refractive index n 1 6 It...

Accounting
1.2K views

Listed below are the transactions of Dr. Yasunari Kawabata, for the month of September, 2021-...

Accounting
1.2K views

What are the differences among errors, frauds, and illegal acts? Give an example of each....

Accounting
1.2K views

1) Why does underpricing exist and persist? 2) Considering investors, the company, and the investment...

Accounting
1.2K views

Bruno Inc. developed two products: HotPlay and ColdGame. The company had done a market survey...

Accounting
1.2K views

thanks Concord Company purchased factory equipment for $653000. The machine's...

Finance
1.2K views

6. Which of the following statements concerning the standard deviation of returns are correct? I....