This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 C ... (Read 37 times)

Brittanyd9008

  • Hero Member
  • *****
  • Posts: 500
on: Aug 27, 2018
Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 C to water vapor at 109.0 C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively.
 
  For H2O, Hfus = 6.01 kJ/mol and Hvap = 40.67 kJ/mol. A) 64.8
  B) 75.9
  C) 11100
  D) 12000
  E) 112

Question 2

What is the molecular formula for heptane?
 
  A) C6H12
  B) C6H14
  C) C7H14
  D) C7H16
  E) C7H18


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xoxo123

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D


Brittanyd9008

  • Member
  • Posts: 500
Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

lcapri7

  • Member
  • Posts: 350
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Nursing Interventions and Prochaska's Stages of Change Nursing Interventions and Prochaska's Stages of Change
Flexible cooling fan blades change shape as the engine speed changes. Flexible cooling fan blades change shape as the engine speed changes.
Contribution of enthalpy and entropy to several favorable processes Contribution of enthalpy and entropy to several favorable processes
The change in the net of an irradiance, in Wm-2, at the tropopause The change in the net of an irradiance, in Wm-2, at the tropopause
Food Sources of Carbohydrates You need to eat at least 130 grams of carbohydrates daily Food Sources of Carbohydrates You need to eat at least 130 grams of carbohydrates daily
A 16-input multiplexer is to be used to perform parallel-to-serial data conversion. Which of ... A 16-input multiplexer is to be used to perform parallel-to-serial data conversion. Which of ...
Video: Attention Deficit Disorder (ADD)

For a complete list of videos, visit our video library