54 635
Assignments Done
98,2%
Successfully Done
In November 2017
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Chemical Engineering Answers

17Questions:

5Free Answers by our Experts:

Ask Your question

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Search & Filtering

Steam with 80% quality is being used to heat a 40% total
solids tomato purée as it fl ows through a steam injection
heater at a rate of 400 kg/h. The steam is generated at
169.06 kPa and is fl owing to the heater at a rate of 50 kg/h. If
the specifi c heat of the product is 3.2 kJ/(kg K), determine the
temperature of the product leaving the heater when the initial
temperature is 50°C. Determine the total solids content of the
product after heating. Assume the specifi c heat of the heated
purée is 3.5 kJ/(kg°C).
A gas feed stream containing 4.03 mole % methane and balance O2 is mixed with a pure
stream of O2. The final stream composition is 2.05 mole % methane. Determine the amount
of O2 needed to dilute the feed stream.
Hint: Assuming a basis may be helpful
In the selective oxidation of isobutylene to dimethyl ketone using a MoO3/U308/SiO2 catalyst it is thought that each reactant utilizes different catalytic sites. The reaction rate is controlled by surface reaction between the two adsorbed species. Postulate a sequence of elementary steps and derive the LH rate equation; sketch the rate versus pressure of isobutylene curve assuming the 0 2 pressure is large. Compare this plot to the case where both reactants compete for the same sites.
An isothermal reversible reaction (A ↔ B) is carried out in an aqueous solution. The reaction is first-order in both directions. The forward rate constant is 1 h–1 and the equilibrium constant is 1. The feed to the plant contains 100 kg-mol/m3 of A and enters at the rate of 120 m3/h. The reactor is a stirred tank of volume 180 m3. The exit stream then goes to a separator, where the concentration of A (CA) is doubled and 30 m3/h is sent back to the CSTR in a continuous operation.
a. Find the conversion.
b. Compare this conversion with what you will get if there is no recycle.
The inside of a baking oven is at a temperature of 177degrees celcius. The wall of an oven is made up of 4mm thick stainless steel of thermal conductivity 15.5W/mk. Determine the heat conduction heat loss per unit area from the oven if outside temperature is at 27degrees celcius above room temperature
Explain the disadvantages of operating reactor isothermally and what is the impact of this disadvantage?
i got the composition of a biodiesel from CHNS analyser is
C-76.61%, H-12.34% , N- 1.33%, O-9.72% (Oxygen by mass balance from CHNS). (i think the results are of in %volume).
Sample weight - 2.69mg. DENSITY OF SAMPLE -870Kg/m3
HIgher heating value of sample -37534KJ/Kg
1. WHAT IS THE LHV OF THE SAMPLE?
2. CHEMICAL FORMULAE AND MOLECULAR MASS?
3. HOW CAN I GET THE MASS FRACTION OF EACH COMPOUND?
A pump is installed to deliver water from a reservoir of surface elevation zero to another reservoir of elevation 290 ft. The 10-in-diameter suction pipe (f = 0.022) is 90 ft long, and the 8-in-diameter discharge pipe (f = 0.028) is 4900 ft long. Minor losses are neglected.
The pump characteristic at 1100 rpm is defined by:
ha = 365 – 20 Q2 (1)
where ha, the pump head, is in feet (ft) and Q, volumetric flowrate, in cubic feet per second (ft3/s).
1. Compute graphically the flowrate and the pump head at the operation conditions.
2. Repeat the question for the case of two identical pumps in series
3. Repeat the question for the case of two identical pumps in parallel.
A pump is installed to deliver water from a reservoir of surface elevation zero to another reservoir of elevation 290 ft. The 10-in-diameter suction pipe (f = 0.022) is 90 ft long, and the 8-in-diameter discharge pipe (f = 0.028) is 4900 ft long. Minor losses are neglected.
The pump characteristic at 1100 rpm is defined by:
ha = 365 – 20 Q2 (1)
where ha, the pump head, is in feet (ft) and Q, volumetric flowrate, in cubic feet per second (ft3/s).
1. Compute graphically the flowrate and the pump head at the operation conditions.
2. Repeat the question for the case of two identical pumps in series
3. Repeat the question for the case of two identical pumps in parallel
100 pounds of an oleum solution containing 15.4% free SO3 is to be diluted
with water to make a 30.8% solution of H2SO4. Calculate the heat evolved.