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

Author Question: Ethanol (C2H5OH) melts at -114 C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of ... (Read 99 times)

RYAN BANYAN

  • Hero Member
  • *****
  • Posts: 563
on: Aug 27, 2018
Ethanol (C2H5OH) melts at -114 C. The enthalpy of fusion is 5.02 kJ/mol.
 
  The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 C to liquid ethanol at -60 C?
  A) 207.3
  B) -13.3
  C) 6.34
  D) 3617
  E) 8.63

Question 2

The normal boiling point of methanol is 64.7 C and the molar enthalpy of vaporization if 71.8 kJ/mol. The value of S when 1.75 mol of CH3OH (l) vaporizes at 64.7 C is ________ J/K.
 
  A) 0.372
  B) 4.24  107
  C) 372
  D) 1.94  103
  E) 1.94
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

al

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Aug 27, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 42% of students answer this correctly


RYAN BANYAN

  • Member
  • Posts: 563
Reply 2 on: Aug 27, 2018
Gracias!

lcapri7

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

« previous next »
 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Mendel’s crosses resulted in specific phenotypic ratios Mendel’s crosses resulted in specific phenotypic ratios
The ethanol molecule showing two carbon atoms, six hydrogen atoms, and one oxygen atom. The ethanol molecule showing two carbon atoms, six hydrogen atoms, and one oxygen atom.
Using hot stones for specific applications under the scapula. Using hot stones for specific applications under the scapula.
Integrative recombination in phage l: The site-specific recombination event Integrative recombination in phage l: The site-specific recombination event
Specific amino acid–nucleotide contacts for cI and Cro repressors Specific amino acid–nucleotide contacts for cI and Cro repressors
Preference in Different Organisms for Specific Glycine Codons Preference in Different Organisms for Specific Glycine Codons
Video: Interview with an Anorexic Woman (Part 1 of 2)

For a complete list of videos, visit our video library