Answer to Question #296850 in General Chemistry for Jaya

Question

The superficial mass velocity is found to be 200 lb/hr.ft2. Find its

equivalent in kg/s.m2

Answer 1

(a) the equivalent mass velocity is 300 lb/(h*ft²) * 0.4536 kg/lb / 3600 s/h / (0.3048 m/ft)²Â =

0.4069 kg/(s*m²)

(b) By definitions:

760 mmHg = 1 atm = 101325 Pa

1 bar = 100000 Pa = 1/1.01325 atm = 760/1.01325 mmHg = 750.06 mmHg

(c) Suppose ideal gas, when:

p*V = m/M*R*T

m = 150 g,

M = 44 g/mole,

R = 8.314 J/(K*mole),

T = 5/9*(100 F - 32) + 273.15 = 310.93 K,

V = 100 cm³Â * 10^-6 m³/cm³Â = 10^-4 m³

p = 150/44*8.314*310.93/10^-4 = 88127455 Pa = 88127455 Pa / 101325 Pa/atm * 760 mmHg/atm = 661010 mmHg

Answer: pressure is 661010 mmHg