OTHER

Question 1

UVA

Answer 1

400 nm - 315 nm
* loss of collagen
* decrease in quantity of blood vessels

Question 2

UVB

Answer 2

315 nm - 280 nm
* tanning/sunburn
* most responsible for skin cancers

Question 3

UVC

Answer 3

280 nm - 100 nm
* absorbed mostly in ozone

Question 4

SPF =

Answer 4

MED for skin w/ sunscreen divided by MED for skin w/o sunscreen

Question 5

MED

Answer 5

Minimal erythemal dose
* length of time one can stay in the sun before getting sunburnt

Question 6

Many biochemical reactions are non-spontaneous but are required for living organisms. How is it that they still proceed?

Answer 6

Two reactions are coupled that result in a spontaneous process overall.

Question 7

why are chemical equilibria are considered to be dynamic processes?

Answer 7

The forward and reverse reactions continue to occur after equilibrium is reached.

Question 8

overall dipole moment

Answer 8

an overall unequal distribution of electrons across the entire molecule

Question 9

The stronger the intermolecular forces of a molecule…

Answer 9

the higher its boiling point will be