CHEMISTRY

If 1 mol of ice melts at its melting point of 273 K, the entropy change for the ice is 22.0 J/K. If the ice melts in someone’s hand at 34°C, what is the change in the entropy of the universe? Assume a final temperature for the water of 0°C. The enthalpy of fusion for ice is 6.01 kJ/mol.

a. +19.6 J/K d. –2.4 J/K
b. –19.6 J/K e. +41.5 J/K
c. +2.4 J/K

  1. 👍 0
  2. 👎 0
  3. 👁 436
  1. dSsurr = -dH/T = -6010/307

    1. 👍 0
    2. 👎 0
  2. b. –19.6 J/K e. +41.5 J/K

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. CHEM

    Calculate ΔSfus and ΔSvap for HF. Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I already calculated ΔSfus as 24.103 J/k*mol and ΔSvap as 86.07 J/K*mol....These are correct (I checked

    asked by Srah on March 16, 2012
  2. Chemistry

    How do you calculate ΔSfus and ΔSvap for HCl given melting point,ΔHfus, boiling point, and ΔHvap also how do you determine the entropy change when 5.20 mol of HCl(l) freezes at atmospheric pressure.

    asked by BOB on April 25, 2014
  3. Science

    When heat flows from a hot spot to a cooler spot, entropy increases. When heat is forced to flow from a cool spot to a warmer spot, entropy decreases. Marta is looking for something in her house that causes a decrease in entropy.

    asked by Clueless on December 28, 2017
  4. CHEMISTRY

    Calculate ΔSfus and ΔSvap for HF. Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I already calculated ΔSfus as 24.103 J/k*mol and ΔSvap as 86.07 J/K*mol....These are correct (I checked

    asked by Brian on March 14, 2012
  5. Physics

    Suppose 100 g of water at 20°C is poured over a 70-g cube of ice with a temperature of -8°C. If all the ice melts, what is the final temperature of the water? If all of the ice does not melt, how much ice remains when the

    asked by James on July 19, 2012
  1. more physics.

    What change in entropy occurs when a 27.9-g ice cube at -12 C is transformed into steam at 115 C? Add the entropy changes due to: (1) heating the ice to 0C, (2) melting the ice, (3) heatng the water from 0 to 100 C, and (4)

    asked by jean on April 26, 2007
  2. Chemistry

    Determine the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure? I got that DeltaS fus = 12.922J/(k*mol) Delta S Vapour = 93.475J/(K*mol) the only thing I don't get is the entropy change when 1.80 mol of

    asked by Lola on May 27, 2015
  3. CHEMISTRY

    Calculate the change in entropy that occurs when 17.68 g of ice at -12.7°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l) are 37.5 J K-1

    asked by Sarah on October 23, 2012
  4. physics

    An ice tray contains 490 g of liquid water at 0°C. Calculate the change in entropy of the water as it freezes slowly and completely at 0°C. i tired doing -(.49kg)(2.26x106)/273.15K) but im not getting the right answr help pls!

    asked by tom on October 30, 2008
  5. Same substances?

    Question: Two substances, A and B, have the same melting point. how can you determine if they are the same without using any form of spectroscopy? Explain in detail. My answer: Perform a mixture melting point. In this procedure,

    asked by Sheryl on October 1, 2006
  6. Chemistry

    If ammonia is manufactured at 356 K, is the reaction spontaneous, given that the enthalpy and entropy change for the reaction are -93 kJ/mol and -198 J/mol K, respectively? A. Yes, the ΔG is -92 kJ/mol. B. No, the ΔG is 92

    asked by Morgan on December 6, 2014

You can view more similar questions or ask a new question.