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

Author Question: How much energy must be removed from a 94.4 g sample of benzene (molar mass = 78.11 g mol-1) at ... (Read 369 times)

formula1

  • Hero Member
  • *****
  • Posts: 666
on: Nov 18, 2019

Question 1

How much energy is required to heat 87.1 g acetone (molar mass = 58.08 g mol-1) from a solid at -154.0 °C to a liquid at -42. 0°C? The following physical data may be useful:

ΔfusH = 7.27 kJ mol-1
Cliq = 2.16 J g-1 °C-1
Cgas = 1.29 J g-1 °C-1
Csol = 1.65 J g-1 °C-1
Tmelting = -95.0 °C

◦ 8.48 kJ
◦ 32.2 kJ
◦ 9.97 kJ
◦ 29.4 kJ
◦ 18.5 kJ

Question 2

How much energy must be removed from a 94.4 g sample of benzene (molar mass = 78.11 g mol-1) at 322.0 K to solidify the sample and lower the temperature to 205.0 K? The following physical data may be useful:

ΔvapH = 33.9 kJ mol-1
ΔfusH = 9.8 kJ mol-1
Cliq = 1.73 J g-1 °C-1
Cgas = 1.06 J g-1 °C-1
Csol = 1.51 J g-1 °C-1
Tmelting = 279.0 K
Tboiling = 353.0 K

◦ 70.2 kJ
◦ 17.6 kJ
◦ 10.5 kJ
◦ 11.8 kJ
◦ 29.4 kJ
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by formula1 on Nov 18, 2019

HandsomeMarc

  • Sr. Member
  • ****
  • Posts: 360
Reply #1 on: Nov 18, 2019
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 55% of students answer this correctly


Bob Rick

  • Newbie
  • *
  • Posts: 1
Reply #2 on: Apr 19, 2022
thanks!!!


« previous next »
 

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Carbon dioxide emission per gigajoule of energy released Carbon dioxide emission per gigajoule of energy released
Colostomy sites (blue area is where colon was removed). Colostomy sites (blue area is where colon was removed).
Some energy interconversions in living organisms Some energy interconversions in living organisms
Solar Energy Solar Energy
Calculation of body mass index. To determine your BMI, find the value for your height on the left ... Calculation of body mass index. To determine your BMI, find the value for your height on the left ...
How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ... How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ...
Video: Pressure volume relationships - Normal inspiration and expiration

For a complete list of videos, visit our video library