Explanation:
Reaction for oxidation of gaseous nitric oxide to aqueous nitrous acid is as follows.
By adding water, we will balance the oxygen atoms on both the sides as follows.
Now, we will balance the hydrogen atoms by adding 
ions as follows.
Now, we will add 
ions on both the sides in order to neutralize ions.
..... (1)
We will combine the and ions in order to form water in equation (1) and cancelling the common terms as follows.
Now, we will balance the charge on both the sides as follows.
Thus, we can conclude that the balanced half-reaction equation is as follows.
Answer:
The environment of space is lethal without appropriate protection: the greatest threat in the vacuum of space derives from the lack of oxygen and pressure, although temperature and radiation also pose risks. The effects of space exposure can result in ebullism, hypoxia, hypocapnia, and decompression sickness.
NaOH (aq) + HCl(aq) => NaCl(aq)+ H2O(l)
Na+(aq)+ OH - (aq) + H +(aq) +Cl - (aq) + Cl- (aq)
=> Na+(aq) + Cl - (aq) + H2O(l)
H+(aq) + OH-(aq) => H2O(l)
Ummmmmmmm...... Idk sorry
