is extractive distillationӞH

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Are there any special considerations to be taken into account for combustion ammonia?

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Define "good" cooling tower water?

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How can you determine the proper pipe thickness for a slurry line?

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Hi, This is Naveen, plz if anybody have experience of IOCL interview, send me question.

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How much water is lost through a commercial cooling tower system with a throughput of about 600 gpm?

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How can you determine the largest impeller that a pump can handle?

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i am giving BARC Trainee exam in chemical. Can anyone tell the syllabus and question paper pattern for OCES for BARC trainee?

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What are some guidelines for sizing a psv for a fire scenario on a vessel in a refinery service?

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1.How a chlorine leak is detected? 2.What would happen if excess chlorine is added to water in cooling tower?

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What is a Spool in terms of piping Industry?

2 Answers   Punj Lloyd Ltd,

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QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.1 : As an approximation, let v = Zc / 137 where v is the radial velocity for 1 s electron of an element, c is the speed of light, Z is the atomic number. For gold with Z = 79, find the radial velocity of its 1 s electron, in term of c and percentage of the speed of light. (b) As an approximation, let A x A = 1 - Z x Z / 18769 where A is the ratio of the relativistic and non-relativistic Bohr radius. Find the value of A.

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