The normal boiling point of C2Cl3F3 is 47.6 C and its molar ...

[urbanoutfitters]

The normal boiling point of C2Cl3F3 is 47.6 C and its molar enthalpy of vaporization is 27.49 kJ/mol. What is the change in entropy in the system in J/K when 28.6 grams of C2Cl3F3 vaporizes to a gas at the normal boiling point?
 
  A) -13.1
  B) -4.19
  C) 4.19
  D) 13.1
  E) 27.5

Question 2

Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N2 (g) + 3H2 (g)  2NH3 (g) A 9.3-g sample of hydrogen requires ________ g of N2 for a complete reaction.
 
  Fill in the blank(s) with correct word

Question 3

Of the elements below, ________ is the least metallic.
 
  A) Ne
  B) F
  C) Cl
  D) O
  E) S

[jamesnevil303]

Answer to Question 1

D

Answer to Question 2

43

Answer to Question 3

A

[urbanoutfitters]

YES! Correct, THANKS for helping me on my review

[nathang24]

Excellent