In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (−196°c) and in boiling pentane (36.1°c). the separate pressures are 0.346 atm and 1.429 atm. hint: use the linear relationship p = a + bt, where a and b are constants. (a) what value of absolute zero does the calibration yield? °c (b) what pressure would be found at the freezing point of water? atm (c) what pressure would be found at the boiling point of water? atm