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

Author Question: Calculate the internal energy change, rU, for the combustion of 9.467 g of L-alanine (C3H7NO2, molar ... (Read 234 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
on: Nov 18, 2019

Question 1

Calculate the internal energy change, ΔrU, for the combustion of 29.3 g of vitamin C (C6H8O6, molar mass = 176.124 g mol-1) if the combustion inside a bomb calorimeter, Ccal = 8.31 kJ °C-1, causes a temperature change from 21.5 °C to 68.3 °C.
◦ -1.67 × 102 kJ mol-1
◦ -1.78 × 103 kJ mol-1
◦ -6.03 × 103 kJ mol-1
◦ -2.34 × 103 kJ mol-1
◦ -9.19 × 102 kJ mol-1

Question 2

Calculate the internal energy change, ΔrU, for the combustion of 9.467 g of L-alanine (C3H7NO2, molar mass = 89.094 g mol-1) if the combustion inside a bomb calorimeter, Ccal = 7.83 kJ °C-1, causes a temperature change from 24.7 °C to 46.1 °C.
◦ -3.48 × 103 kJ mol-1
◦ -1.58 × 103 kJ mol-1
◦ -8.60 × 102 kJ mol-1
◦ 6.14 × 103 kJ mol-1
◦ 3.84 × 103 kJ mol-1
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 crobinson2013 on Nov 18, 2019

xMRAZ

  • Sr. Member
  • ****
  • Posts: 363
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 35% of students answer this correctly


crobinson2013

  • Member
  • Posts: 535
Reply 2 on: Nov 18, 2019
Great answer, keep it coming :)

AISCAMPING

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

The breast, cutaway view showing both internal and external features. The breast, cutaway view showing both internal and external features.
Internal oblique Internal oblique
Thumb, knuckle slides, and kneading (as appropriate) to energy meridians in the upper arm in 5 ... Thumb, knuckle slides, and kneading (as appropriate) to energy meridians in the upper arm in 5 ...
Reactions 6–10: The Energy Generation Phase Reactions 6–10: The Energy Generation Phase
Pyramids of energy, biomass, and numbers Pyramids of energy, biomass, and numbers
Climate Change: Volcanoes Timescale Climate Change: Volcanoes Timescale
Video: Flexor reflex & Crossed extensor reflex

For a complete list of videos, visit our video library