I need help because my book is at school.

How can one make a supersaturated solution? (apex)

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

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.