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Suppose that you start with 103 g of a pure radioactive substance and 2 h later determine that only 0:25 103 g of the substance remains. What is the half-life of this substance?
What is the best way to report density and absolute error in density based on the mass and volume measurements? Choose the single best answer 10.07 ± .194 gm/ml 10. ± .2 gm/ml
The organic solution is evaporated to dryness and then the product is purified by chromatography in methanol over aluminum oxide or silica gel. Sketch a block flow diagram of the process.
How many kilograms of natural gas are flowing through the pipelines per hour ( use different steps required in material balance calculations).
What is Expected value for this decision scenario, given that Pr(good) = 0.7? Assume you will face this decision scenario yearly for many years.
Draw a schematic connection diagram as an autotransformer.
prepare the design and evaluation of a new chemical manufacturing process.1 acetylation reactor2 separation of
questiona personal protective equipment are only used when it has proven impractical to control occupational hazards by
Determine the frequency of the rotor voltages of the induction machine.
question 1what are the two main types of industrial ventilation which are used to control airborne contaminants in a
Explain Non-adiabatic operations of flow reactors. 15In non-adiabatic operations, heat interchange with the surroundings will beaccounted. The conversion can be defined as the ratio of the net heat still needed after heattransfer to raise the feed..
Design the most efficient centrifugal pump that produces 200 gpm (45.5cumeters/hr) water flow rate at 100 psi (680 kPa) head. Specify the impellor diameter and width for a 3400 rpm service.
For a gas flow rate of 100,000 m3 /h, at the reactor conditions, determine how many cyclones operating in parallel are needed and design a suitable cyclone. Estimate the size distribution of the particles entering the filters.
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