Answer / sajil

ya deafnetly,anything less than atmosphere can be called as vacuum..

Answer / ankit negi

atm pressure is 1.013 kg/cm2 at sea lvel. at higher
altitudes atm pressure reduces,so a man at high altitude
will not be called in vacuum....

Answer / sudip bharati

vacuum is a negative pressure created by surrounding system
for their requirement, which is much or more less than the
atmospheric pressure. it is always measured with respect to
the surrounding atmospheric pressure either it is at hill
station or under the sea level.

Answer / renish

vacuum is always measured on sea/mercury level if atm
pressure is below some mmhg then its called vacuum

Answer / vaishtushar

Vacuum is space that is empty of matter.When the pressure exerting is much lesser than the atmospheric pressure then it is called vacuum.If it is slightly less than atmospheric pressure it is not called vacuum.fo ex at hill stationsthey are not living in vacuum.

In gas and water who's density is greater and why?

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I am currently doing my btech in computer science in Coimbatore.I had intererest to do btech in chemical enginerring but couldnt get a seat. Now what are my options ,scope and future if i take mtech in chemical enginerring? And can i apply for any deemed colleges for mtech chemical enginerring through gate taking my present state into consideration(btech in cse and mtech in chemical enginerring)

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BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.4 : The resolution of separation, Rs for chromatography is given by the formula Rs = (difference in retention time) / (average width at the base). In a chromatogram, 3 peaks a, b and c are found. Average widths W at the bases of the solutes are : Wa = 20 s, Wb = 40 s, Wc = 30 s. Resolutions of separation, Rs for solutes b and c in comparison to a are 2 and 4 respectively. The differences in retention times T for b and c in comparison to a are (Tb - Ta) and (Tc - Ta), Ta = Tc - Tb : (a) Form 2 equations involving Rs as a function of Wa, Wb, Wc, Ta, Tb and Tc. (b) Find the values of Ta, Tb and Tc.

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What are some common precipitating agents used to remove metals from aqueous waste streams?

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What is a barometric condenser?

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what is mass flow rate of steam of 7 kg/cm2 pressure in 1 inch id. pipe.

0 Answers   Ascent,

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what is the difference between car seal close/open valves and lock close/open valves?

0 Answers   MNC,

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Question 90 - In the calculation of the growth of bacteria, absorbance, A in spectrophotometry is used. According to Beer-Lambert Law, A = e x l x c where A is the absorbance of the solution (no unit), l is the distance of light travels through the solution (in cm), e is the molar absorptivity or the molar extinction coefficient [ in L / (mol.cm) ]. For a particular solute and fixed path length : As / Ao = Cs / Co where Ao is the observed signal for a known concentration Co, and As is the observed signal for a sample concentration Cs. (a) For a cell concentration of 560 cells / mL, a spectrophotometre gives an absorbance reading of 1.0. A mixture of concentration 3600000 cells / mL can be diluted in several operations, with each operation having a dilution of 1:20. How many dilutions should be made so that the concentration of this mixture can be calculated within a range of A = 0.0 to 1.0. (b) In another experiment, a sample tube of 1 cm in width is used. Let A = 0.06 and e = 0.0012 ml / (cell.cm). Find the cell concentration of the sample.

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Explain the different types of equipments for the conveyance of solids?

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Hello i am a chemical engineer presently looking for a job i am applying many jobs in naukri and in all job portals but i am not getting any call or interview so kindly some one help me in this regard soundar

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Question 40 - A stream with volumetric flow rate Q enters a cylindrical tank and a stream with volumetric flow rate q exits the tank. The fluid has a constant heat capacity and density. There is no temperature change or chemical reaction occurring in the tank. Develop a model for determining the height of the tank, h. Let V is the volume, A is the cross sectional area, r is the density, m is the mass, where V and A are for the tank, r and m are for the fluid. The rate of mass of fluid accumulation, dm / dt = (Q - q) r. Prove the model to be dh / dt = (Q - q) / A.

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What is a good device to use for obtaining viscosity data for a non-newtonian fluid?

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