The size of your classroom is 80 ft wide, 40 ft deep, and 12 ft high. Assume that theair in the classroom is 25 oC and at 14.7 psia. Calculate(a) the mass of oxygen in the room in kilograms, and(b)  the viscosity of the air, in pascal-seconds (Paꞏs) [kg/(mꞏs)].

The size of your classroom is 80 ft wide, 40 ft deep, and 12 ft high. Assume that the
air in the classroom is 25 o
C and at 14.7 psia. Calculate
(a) the mass of oxygen in the room in kilograms, and
(b)  the viscosity of the air, in pascal-seconds (Paꞏs) [kg/(mꞏs)].