Homework Help is Here – Start Your Trial Now!
Science
Chemistry
A cup of hot coffee initially at 100°C cools to 90°C after 15 minutes in a room at TS = 65°C. T = (T0 – TS) e–kt + TS What is the value of the decay constant k?   Question 8 options:   1.56 min–1   0.0224 min–1   0.381 min–1 What is the coffee temperature after 60 minutes?   Question 9 options:   74.1°C   81.0°C   77.3°C How much time is required for the coffee to cool to 80°C?   Question 10 options:   42.8 minutes   37.8 minutes   32.3 minutes

A cup of hot coffee initially at 100°C cools to 90°C after 15 minutes in a room at TS = 65°C. T = (T0 – TS) e–kt + TS What is the value of the decay constant k?   Question 8 options:   1.56 min–1   0.0224 min–1   0.381 min–1 What is the coffee temperature after 60 minutes?   Question 9 options:   74.1°C   81.0°C   77.3°C How much time is required for the coffee to cool to 80°C?   Question 10 options:   42.8 minutes   37.8 minutes   32.3 minutes

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter14: Nuclear Chemistry
Section: Chapter Questions
Problem 14.95PAE
See similar textbooks
icon
Related questions
Question

A cup of hot coffee initially at 100°C cools to 90°C after 15 minutes in a room at TS = 65°C.

T = (T0 – TS) e–kt + TS

What is the value of the decay constant k?

 

Question 8 options:

 

1.56 min–1
 

0.0224 min–1
 

0.381 min–1

What is the coffee temperature after 60 minutes?

 

Question 9 options:

 

74.1°C
 

81.0°C
 

77.3°C

How much time is required for the coffee to cool to 80°C?

 

Question 10 options:

 

42.8 minutes
 

37.8 minutes
 

32.3 minutes
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Chemistry for Engineering Students
Chemistry for Engineering Students
Chemistry
ISBN:
9781337398909
Author:
Lawrence S. Brown, Tom Holme
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS