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 22 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
Gracias!

AngeliqueG

  • Member
  • Posts: 343
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Despite the globe’s vast social change, people all over the world continue to make race a ... Despite the globe’s vast social change, people all over the world continue to make race a ...
Calculate the number of sodium ions in 0.375moles of Na2CO3.10H20 Calculate the number of sodium ions in 0.375moles of Na2CO3.10H20
Calculate the electron affinity for the formation of the hydride ion from the following ... Calculate the electron affinity for the formation of the hydride ion from the following ...
Calculate the molar solubility of thallium(I) chloride in 0.30 M NaCl at 25°C. Ksp for TlCl is ... Calculate the molar solubility of thallium(I) chloride in 0.30 M NaCl at 25°C. Ksp for TlCl is ...
Calculate the amount of interest that will be charged on $9000.00 borrowed for four months at ... Calculate the amount of interest that will be charged on $9000.00 borrowed for four months at ...
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur (left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur
Video: Antidiuretic hormone (vasoconstriction, water reabsorption & sweat inhibition)

For a complete list of videos, visit our video library