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Author Question: Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 C ... (Read 32 times)

Brittanyd9008

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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


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xoxo123

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D


Brittanyd9008

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Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)

brbarasa

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Reply 3 on: Yesterday
Wow, this really help

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