Answer:
Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed. ... When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.
Waves with higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths
Answer: 0.150 m
will have highest boiling point.
Explanation:
Formula used for Elevation in boiling point :

where
= elevation in boiling point
[tex[k_b[/tex] = boiling point constant
m = molality
i = Van't Hoff factor
A) 0.100 m 
i = 3 as 
concentration will be 
B) 0.250 m 
i = 1 as
is a non electrolyte
concentration will be 
C) 0.100 molal 
i = 2 as 
concentration will be
D. 0.150 molal 
i = 3 as 
concentration will be
E. 0.150 molal 
i = 2 as 
concentration will be
The solution having the highest concentration of ions will have the highest boiling point and thus 0.150 m
will have highest boiling point.
Number 1 is 4.875 Number 2 is 3.47 repeating