Answer:

Explanation:
The steps of the Ostwald process:



Combinning the equations:

+

+

=

Simplifying:


The overall reaction is endothermic becuase the formation of new chemical bonds requires energy consumption.
An H atom is made up of a nucleus with a +1 charge, as well as a single electron. Therefore, the only positively charged ion possible has charge +1.
I hope this helps!
Using boyles law
p1v1=p2v2
v1=3.88
v2=5.43
p1=707
p2=?
707x3.88=p2x5.43
2743.16/5.43=p2
p2=505mmHg
D. An animal decaying after it dies seem to be the right answer hopefully.