It’s the second answer. “it gets used for metabolic process & released as heat” i think.
It's a weak base bacause H C N is weak
1mol=6.022x10^23 atoms
3.75mol= 6.022x3.75x10^23 atoms
=2.2583x10^24 atoms
Answer:
I'm pretty sure its the one that says very little at the beginning but if I get it wrong I'm sorry