i) Determine the sedimentation coefficient of sphere particles with 0.1 micrometer size and density of 1200 kg/m^3 in tetrahydrofuran (THF) at 25 degrees celcius which density of THF is 889 kg/m^3 and its viscosity is 0.456 mPa.s. ii) Assume the particle size is doubled, determine the sedimentation coefficient.

One of the primary functions of impact testing is to determine whether a material experiences a ductile-to-brittle transition. Clearly explain what it means when a material exhibits “ductile-to-brittle transition” behavior?

The air exiting a furniture manufacturing factory from a extractor fan needs to be treated. What method could be used to
treat the organic gases in the air? Explain with the used of diagrams, how this would be done.

1. A distillation column is separating 100 kmol/h of saturated vapor feed that is 30 mol% ethanol, 25 mol% i-propanol, 35 mol% n-propanol, and 10 mol% n-butanol at a pressure of 1.0 atm.  We want a 98.6% recovery of i-propanol in the distillate and 99.2% recovery of n-propanol in the bottoms.  The column has a total condenser and a partial reboiler. The distillate flow rate in kmol/hr is ___________, the bottoms flow rate in kmol/hr is ____________, the molar fraction of i-propanol in the distillate is ______________, and the molar fraction of n-propanol in the bottoms is _________________.

Can the Rachford-Rice equation be used for binary systems? If yes, use it to solve the following:

A mixture of 50 mole % normal heptane and 50% normal octane at 30 degrees C is continuously flash distilled at 1 standard

atmosphere so that 60 mol% of the feed is vaporized. What will be the composition of the vapor and liquid products? Assume

constant relative volatility, αAB=2.0.

The composition of the vapor product is nearly_______________

A student is studying a temperature-composition diagram of a binary mixture of two pure substances, Kimium and Kallosium, at 1 atm. The molar mass of Kimium and Kallosium are 80 kg/kmol and 100 kg/kmol respectively. The substances are completely miscible, without any azeotrope at 1 atm. The student has obtained the following data from the diagram.

a) in an experiment, 1 kmol of liquid mixture of 30 mol% Kimium and remaining Kallosium is brought to an equilibrium temperature of 100 degrees Celsius at 1 atm.

i) how many phases are present?

ii) Find the amount of each phase in kmol.

iii) find the amount of each phase in kg.

b) How many phases will be present at equilibrium in a closed container filled with 25 mol Kimium and 75 mol Kallosium at 110 degree Celsius and at 1 atm?

1. Is there a relationship between the temperature and the dissolved oxygen concentration? If so, describe
their relation.

2. What is the importance of knowing the amount of dissolved oxygen in water quality?

3. What is the standard acceptable range of dissolved oxygen (DO) set by the government agencies for
water quality?

Write an introduction about heat exchangers and heat exchanger type (single shell pass, four tube pass shell and tube heat exchanger). Provide necessary references and citations (Harvard system).

Discuss the results that you would obtain and give reasons for the different values of the overall heat transfer coefficient and the heat transfer area, if you had to calculate the heat transfer area with and without the fouling factor. Also, include the effects of incorporating fouling factors on the final heat exchanger size and operation. Provide proper Harvard referencing with citations.

A separator divides a process stream into three phases: a liquid organic stream, a liquid aqueous stream, and a gas stream. The feed stream contains three components, all of which are present to some extent in the separated streams. The composition and flow rate of the feed stream are known. All the streams will be at the same temperature and pressure. The phase equilibria for the three phases is available. How many design variables need to be specified in order to calculate the output stream compositions and flow rates

Scientists have identified that the rate of deaths in a country can be correlated to the density of the population (#people/area), the average age and weight of the population, the average work commute and he net mass flow rate of people in & out of the country.

(a) Apply dimensional analysis to this problem and find the minimal number of dimensionless groups needed to describe and understand the available data.

(b) Discuss the findings and what conclusion may be drawn out of the analysis.

Describe how you would determine, using the van der Waals equation of state, the temperature of a real gas mixture of 3 gasses (A,B and C) given the pressure P in the container, the mass of each gas m_A, m_B, m_C, and the volume v of the container. You also have access to the critical properties (T_CA, T_CB, T_CC, P_CA, P_CB, P_CC) and molar masses (M_A, M_B, M_C,) of each gas. Use these variables and list all equations and steps in order with enough detail so someone else who has no knowledge of this course could solve the problem using your steps.