Need answer quick please A gas system has initial volume and moles of 62 mL and 3.6 moles. If the volume changes to 9.19 mL, under conditions of constant P and T, what will the final number of moles be?

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.