Calculating Mass and Volumetric Flow of Nitrobenzene: Homework Solutions

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SUMMARY

The discussion focuses on calculating the mass and volumetric flow of nitrobenzene, with specific gravity (SG) noted as 1.20. For 250 liters of nitrobenzene, the calculated mass is 300 kg. The volumetric flow corresponding to a mass flow of 30 lbm/h is determined to be 183.33 mL/min. Additionally, the density of a mixture of 20 liters of nitrobenzene and 3 ft³ of benzene (SG = 0.879) requires further calculations based on total mass and volume.

PREREQUISITES
  • Understanding of specific gravity (SG) and its formula: SG = p/pref
  • Knowledge of volumetric flow rate calculations
  • Familiarity with unit conversions, particularly between liters, cubic feet, and pounds
  • Basic principles of density and mixture calculations
NEXT STEPS
  • Learn how to convert between mass flow rates and volumetric flow rates
  • Study the calculation of density for mixtures of different substances
  • Explore unit conversion techniques for fluid measurements
  • Investigate the properties and applications of nitrobenzene in chemical engineering
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Chemical engineering students, professionals working with fluid dynamics, and anyone involved in the calculations of mass and volumetric flow rates in chemical processes.

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Homework Statement



The specific gravity of nitrobenzene is 1.20.
a) Calculate the mass in kg of 250 litres of nitrobenzene.
b) Calculate the volumetric flow in mL/min corresponding to a mass flow of 30 lbm/h of nitrobenzene.
c) Calculate the density of a mixture composed of 20 litres of nitrobenzene and 3 ft^3 of benzene (SG = 0.879), by supposing that the volume of the mixture is the sum of the volume of the two substances.

Homework Equations



SG=p/pref
v=m/p

The Attempt at a Solution


a) I got 1.2*250=300 kg
b) I got v= 183.33 ml/min
C) I do not know how to solve it
I find 3ft^3= 84.950
and I do not how to solve it?Please help me
 
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Mix density = total kg / total liters (or total lbs/ total cu ft). Figure out both totals, then divide.
 

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