If the pressure exerted on a sample of gas is increased from 0.89 atm to 3.56 atm what is the initial volume of the gas in ml if the final volume was 20.0 ml?

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

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.