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R = l o g mean radius of the tube, r 2 - r 1 l n ( r 2 r 1 ) , with

R=log mean radius of the tube, r2-r1ln(r2r1), with r in cm.
What are the units of D?
(15 marks)
2.2. The heat capacity of a golden syrup has the units Jgmol(C) and is given by the following relation:
CP=139.1+(1.5610-1)T(C), where Tis expressed inC
Modify the formula so that the heat capacity has the following units: Btulbmol(R).
In the given relation, T is used as a specific temperature value and not a unit temperature difference.
T(C)=11.8[T(R)-460-32]
Question 3[35]
3.1 Liquid benzene (C6H6) flows through a pipe at a rate of 300m3s. If benzene has a density of 0.876gcm3. Determine:
3.1.1. The mass flow rate of this stream in kgmin.
(4 marks)
3.1.2. The molar flow rate in mols if the molecular weight of benzene is 78gmol.
(6 marks)
3.2. An aqueous solution prepared at room temperature contains 55%H2SO4 with specific gravity =1.2563.
3.2.1. Calculate the volume of the solution that will contain 195.5kg of H2SO4.
(5 marks)
3.2.2.Re-calculate the volume of the solution if pure component specific gravities of )=(1.8255 and water had been used for the calculation. Assume additive volume is applicable.
(8 marks)
3.2.3. Estimate the percent error in volume calculation.
(7 marks)
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