Answer:
C. water acts as a radiation shield to reduce the radiation level
I think the correct answer is air!
The vapor pressure (in torr) of a 35°C solution : 52 torr
<h3>Further explanation</h3>
Given
x propanol = 0.75
P°ethanol=100 torr
P°propanol=36 torr
Required
the vapor pressure
Solution
Raoult's Law
P solution = xA.P°A +xB.P°B
x ethanol = 1- 0.75 = 0.25
Input the value :
P solution = 0.25 x 100 + 0.75 x 36
P solution = 25 + 27
P solution = 52 torr
fluorine chlorine bromine iodine