Author Question: The value of H for the formation of POCl3 from its constituent elements, P2 (g) + O2 (g) + 3Cl2 (g) ... (Read 93 times)

amal · **on:** Aug 27, 2018

The value of H for the formation of POCl3 from its constituent elements, P2 (g) + O2 (g) + 3Cl2 (g) 2POCl3 (g) is ________ kJ/mol.

A) -1228.7
B) -397.7
C) -686.5
D) +1228.7
E) +686.5

Question 2

Norepinephrine agonists

A) destroy norepinephrine.
B) mimic norepinephrine.
C) block neural receptor sites for norepinephrine.
D) all of the above