In: Physics
1) What is the pressure inside a 32.8 m3 container holding 103.4 kg of argon gas at 395 K(MAr=40x10-3kg/mol)?
2) A 10kg object floats with 5/7 of its volume under the surface of the water. What is the density of the object? The density of water is 1000 kg/m3.
ANS : (1) : V = 32.8 m3 , T = 395 K , R = 8.314
From PV = RT
P = RT / V
P = ( 8.314 x 395) / 32.8
P = 100.122 Pa
the density of the object is d = m / v
d = (10 x 7 ) / 5
d = 70 / 5
d = 14 kg / m3