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molecular diffusivity of toluene in the air is 8.14 × 10−6 m2/s
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Why is toluene in hexane used in uv calibration?
Toluene has clear absorption peaks at 266 nm and 269 nm. Hexane is only the solvent.
Example of Air resistance?
Calculate drag coefficient of freefaller (prior to chute opening)>(constant) force down (in newtons) due to gravity = mass * acceleration due to gravity, say 80 * 10 = 800 newtons.>The up force (newtons) = velocity2 * drag coefficient>At terminal velocity (where up and down forces balance) the up force = 800 newtons, say terminal velocity = 70 metres / second>800 = 4900 * drag coefficient>Drag coefficient = 800 / 4900>Drag coefficient = 0.163
Does resorcinol dissolve in toluene?
Yes but it requires a higher temperature than room temperature.
An example of two surfaces that have a low coefficient of friction?
human joints are an excellent example. they have a static friction coefficient of .01 μs and a kinectic friction coefficient of .003 μkanother good example would be waxed wood on dry snow (as in a snowboard on a ski slope) this has a static friction coefficient of .04 μsHope this helped!
The coefficient of friction is a blank number that represents the resistance to sliding between two blank in contact with one another?
Unitless, surfaces
What is the relation between apparent diffusion coefficient and mean diffusivity on DTI?
It is the same. ADC=MD.
What is the physical significance of the thermal diffusivity and How is it defined and what?
Thermal diffusivity signifies the rate of heat transfer into the solid. If it is higher then less time is required for the heat to penetrate into the solid. it is th property of a solid. If we know the mass density,specific heat and thermal conductivity coefficient then we can determine its thermal diffusivity.
What is the Difference between diffusivity and mass transfer coefficient?
The rate of transfer of a process is equal to the driving force divided by the resistance.The mass transfer coefficient is the resistance to mass transfer. In mass transfer the driving force is the concentration gradient. The mass transfer coefficient is considered anything that contributes to resistance to mass transfer: thermal and eddy diffusivity, distance, etc.Fick's law of diffusion describes convective mass transfer as:N=-c*D*(ca2-ca1)/(z2-z1)where:-c is some constant multiplier (unitless)-The quantity (z2-z1) is the distance between two points. (length i.e. meters)-D is the mass diffusivity or the diffusion coefficient and is dependent on properties of the substance (such as particle size etc.) and temperature. (units: length2/time i.e. m2/s)-The quantity (ca2-ca1) is the concentration gradient between the same two points (the driving force) (units: amount/length3 i.e. mol/m3)-N is the rate of mass transfer (units: mass/(length2*time) i.e. mol/m2*s) )Putting Fick's law in terms of the mass transfer coefficient kc', yields:N=-kc'*(ca2-ca1)where kc'= -c*D/(z2-z1).You can see that the mass transfer coefficient is in fact a function of the diffusivity.
How does the mass diffusivity of a gas mixture changes with temperature and pressure?
mass diffusivity increases with increasing temperature and decreases as pressure increases.
Are there any isomers of toluene?
Yes. Two isomers of toluene are known as toluene-2,4-diisocyanate and toluene-2,6-diisocyanate
What is the formula for toluene?
C6H5CH3 is toluene.
What is the pH of toluene?
What is the pH of toluene?
Is toluene evaporates from water?
Toluene is not miscible with water; toluene is released by slow evaporation.
What has the author Howard E Momberg written?
Howard E. Momberg has written: 'A comparison of two methods for the determination of toluene diisocyanate in air' -- subject(s): Toluene 2,4-Diisocyanate, Analysis
What is the odour of toluene?
Toluene is an aromatic compound.
Is toluene a pure substance or mixture?
Toluene is a compound. not a mixture
What is the thermal diffusivity of polypropylene?
Thermal diffusivity is the density divided by the specific heat of a substance. The TD of polypropylene is around 0.096 meters squared per second.
