The balanced chemical reaction is:
HNO3 + NaOH = NaNO3 + H2O
We are given the amount and concentration of the reactants. The values given will be the starting point.
0.20 mol /L HNO3 (.015 L) (1 mol NaOH / 1 mol HNO3) = 0.003 mol NaOH
0.003 mol NaOH / 0.10 mol/ L NaOH = 0.03 L NaOH or 30 mL NaOH
Answer: 2-butanol
Explanation: I looked it up, I really don’t know how trustworthy my source was. (not Wikipedia)
Answer : The water's temperature change will be, 
Explanation : Given,
Density of water = 0.998 g/mL
Volume of water = 
(conversion used : 1 L = 1000 mL)
Specific heat of water = 
Heat absorbed = 
(conversion used : 1 kJ = 1000 J)
First we have to determine the mass of water.


Now we have to calculate the change in temperature of water.
Formula used :

where,
Q = heat absorbed by water
m = mass of water
= specific heat of water
= change in temperature
Now put all the given value in the above formula, we get:


Therefore, the water's temperature change will be, 