Calculate the enthalpy for the following reaction: N2 + O2 2 NO ...

[Arii_bell]

Calculate the enthalpy for the following reaction: N2 + O2  2 NO given the following bond dissociation energies: N2 = 226 kcal/mol, O2 = 199 kcal/mol and NO = 145 kcal/mol.
 
  A) 135 kcal/mol
  B) -135 kcal/mol
  C) 280 kcal/mol
  D) -280 kcal/mol

Question 2

The most characteristic feature of thiols is ________
 
  A) odor
  B) solubility in water
  C) reactivity with water
  D) boiling point
  E) color

[raenoj]

Answer to Question 1

A

Answer to Question 2

A

[Arii_bell]

Excellent

[Viet Thy]

Gracias!