A gas mixture consists of 85% (by volume) O2 and 15% methane (CH4). Assume the total pressure is 1.7 atm (always absolute). (a) Calculate the volumetric fraction of methane in ppmv. (b) Calculate the total pressure in psig.

Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m