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Author Question: The molar concentration of hydronium ion in pure water at 25 C is ________. A) 0.00 B) 1.0 10-7 ... (Read 138 times)

stephzh

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The molar concentration of hydronium ion in pure water at 25 C is ________.
 
  A) 0.00
  B) 1.0  10-7
  C) 1.0  10-14
  D) 1.00
  E) 7.00

Question 2

Calculate G (in kJ/mol) for the following reaction at 1 atm and 25 C: C2H6 (g) + O2 (g)  CO2 (g) + H2O (l) (unbalanced)
 
  Hf C2H6 (g) = -84.7 kJ/mol; S C2H6 (g) = 229.5 J/K  mol;
  Hf CO2 (g) = -393.5 kJ/mol; S CO2 (g) = 213.6 J/K  mol;
  Hf H2O (l) = -285.8 kJ/mol; S H2O (l) = 69.9 J/K  mol;
  S O2 (g) = 205.0 J/K  mol

Question 3

What is the ONO bond angle in NO3-?
 
  A) less than 109.5
  B) 109.5
  C) 120
  D) greater than 120


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nathang24

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