Which is expected to have the most negative standard enthalpy of ...

[SO00]

Which is expected to have the most negative standard enthalpy of formation?
 
  A) H2(g)
  B) O2(g)
  C) H2O(g)
  D) H2O(l)

Question 2

Which substance is the oxidizing agent in the reaction below? Pb + PbO2 + 2H2SO4  2PbSO4 + 2H2O
 
  A) Pb
  B) H2SO4
  C) PbO2
  D) PbSO4
  E) H2O

Question 3

The monomer that is polymerized to make natural rubber is ________.
 
  A) isoprene
  B) ethylene
  C) styrene
  D) urethane
  E) propylene

[reversalruiz]

Answer to Question 1

D

Answer to Question 2

C

Answer to Question 3

A

[SO00]

Gracias!

[carojassy25]

Thanks for the timely response, appreciate it