Answer : The correct option is, (7) 332 mL
Explanation : Given,
Density of solution of sulfuric acid = 
38.1 % acid by mass that means 38.1 grams of sulfuric acid present in 100 grams of solution of sulfuric acid.
Now we have to calculate the mass of solution of sulfuric acid.
As, 38.1 grams of sulfuric acid present in 100 grams of solution of sulfuric acid
So, 163 grams of sulfuric acid present in
grams of solution of sulfuric acid
Now we have to calculate the volume of sulfuric acid solution.



Therefore, the volume of sulfuric acid solution needed is 332 mL.
The enamel is the strongest substance in our bodies mainly inside your mouth.
Answer:
-0.050 kJ/mol.K
Explanation:
- A certain reaction is thermodynamically favored at temperatures below 400. K, that is, ΔG° < 0 below 400. K
- The reaction is not favored at temperatures above 400. K, that is. ΔG° > 0 above 400. K
All in all, ΔG° = 0 at 400. K.
We can find ΔS° using the following expression.
ΔG° = ΔH° - T.ΔS°
0 = -20 kJ/mol - 400. K .ΔS°
ΔS° = -0.050 kJ/mol.K