A lake is home to a large number of trout. Identify what is most likely to happen if a chemical is dumped into the lake. (2 points) I. The trout will not be affected by the pollution.
II. The number of trout will increase.
III. The trout will suffer from disease.

a
I

b
I and II

c
III

d
II and III

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.