What is the partial pressure, in atmospheres, of O2 in the air outside an airliner cruising at an altitude of 10 km, where the atmospheric pressure is 190 mmHg? How much must the outside air be compressed to produce a cabin pressure in which PO2 = 0.200 atm?

Which of the following words describe the reality that the universe looks the same from various perspective

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules