Question: Please mark the answer in a circle Q.4 Determine the mass and the weight of the air contained in a room whose dimensions are 80

Q.4 Determine the mass and the weight of the air contained in a room whose dimensions are 80 cm x 4m x 2500 mm. Assume the density of air is 1.18 kg/mu? Q.5 If 8x10*cm3 of oil in a tank weighs 50 kN, what is the mass density in kg/m"? Q.6 Determine the specific weight and the mass of Oxygen (R = 0.2598 kJ/kg.K) in a room whose volume is 11x10 cm3 at 150 kPa and 25.C
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