The pressure of a sample of gas at constant volume is 8atm at 70C. What will the pressure be at 20C? (please explain the steps to answer this)

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule