A crude barometer (a device for measuring atmospheric pressure) is constructed by placing a 50. kg circular piston atop 0.079 moles of compressed air in a cylinder, as shown in the gure below. 1am 4} 100m The gas inside the cylinder is maintained at a constant 300 C temperature. When the atmospheric pressure outside the cylinder is 1.0 atm, the piston is h = 25 cm above the bottom of the cylinder. A low pressure front passes the region, causing the atmospheric pressure in the vicinity of the cylinder to drop. If the piston rises a distance of 1.23 cm, what is the current atmospheric pressure? Give your answer in atmospheres, to the nearest tenths place - i.e., #.#. Do not enter units in the answer box. A rigid container holds an ideal gas that is initially at 300 K. The temperature is raised to 1,200 K. By what factor does the pressure of the gas change - i.e., what is pf /p%-? 0.333 0.063 16 0.25 0.5