Which of these is true of the Endangered Species Act?

A. It states that plants are not eligible for protection.

B. It protects only those species classified as endangered.

C. It is intended to improve he quality of air and the water in the US.

D. It requires the government to prevent activity that could hurt threatened or endangered species.

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.

Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol