The North American record for highest recorded barometric pressure is 31.85 in Hg, set in 1989 in Northway, Alaska. Convert this pressure to each indicated unit.
a . mmHg
b . atm
c . torr
d . kPa (kilopascals)
Solution 27E Step 1: Part (a) In case (1) the piston is movable while in case (2) the piston is fixed when the energy is supplied the gas molecules gains energy results in increased entropy in case (1) the gas transfers gained energy to piston in the form of work expansion while in case(2) the piston is fixed results in heat absorption to the gas molecule with increased temperature. In case(1) temperature remains same same as pressure changes by piston movement while in case (2) temperature increases with fixed pressure due to non-motion of piston. Step 2: Part (b) In case (1) the heat is absorbed by the system q > 0, while work is w < 0 as its done by system to the surroundings In case (2) q=100 J but no expansion of piston leads to w = 0