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Thermodynamics

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289 Views

molar heat capacity of water??

Hrisheekesh Singh 28th Aug, 2020

Hi Kasini,

Molar heat capacity is usually given in kJ/molK which basically means how much energy you need to raise the temperature of 1 mole of substance by 1K.

The molar heat capacity of water at constant pressure is 75 J K^−1 mol^−1

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!


114 Views

Should I revise 11th thermodynamics for studying engineering thermodynamics?

Rashmi khemariya 10th Sep, 2020

Hello aspirant!!

If u wish to revise 11th class thermodynamics, it is a good desision. It will help you to build strong concept for further studies and will give your deep rooted knowledge about this subject.

Hope you find this useful.


430 Views

What is 2nd law of Thermodynamics?

Neha Kanwar 1st May, 2020

Hello Aryan,

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time, and is constant if and only if all processes are reversible. Isolated systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy.

Hope it clears your doubt.

Thank you!

454 Views

what is viscosity?And explain one example

S. Saha Student Expert 20th Apr, 2020

Viscosity is a measure of a fluid's resistance to flow. It's a physical property of fluids. In simple words, viscosity shows resistance to flow. Some liquids with low viscosity are- Water, Ether, Chloroform, Acetone etc. Most of the low viscous fluids are non polar with mow intermolecular forces. High viscosity means that the friction between two layer is high. So the liquid will flow slowly. For example, Vegetable oil, mercury, glycerin and many more.

353 Views

thermodynamics criteria for non equilibrium States

Pratyay Islam 27th Mar, 2020

Hello,

For understanding non-equilibrium thermodynamics the thermodynamic equilibrium has to be understood.

Thermodynamic Equilibrium - A system is in thermodynamic equilibrium if its fundamental properties do not undergo any change with time , i.e., Change in volume, pressure, temperature , no of molecules all equal to zero.

Thermodynamic Non-Equilibrium - This kind of system is actually trying to achieve thermodynamic equilibrium and therefore all the fundamental properties like Volume, Pressure, Temperature and number of moles are undergoing change with respect to time.

So for Thermodynamic Non-Equilibrium >>  Δ V ≠  Δ P ≠ Δ T ≠  Δ n ≠  0 . This is the criteria followed

749 Views

what is the definition of thermodynamics

Akram Khan 22nd Mar, 2020

Hi,

In the word thermodynamics therma stands for heat and dynamics stands for the change.

So we can define thermodynamics as -

"Thermodynamic is the branch of science which deals with the processes of energy and heat changes and their relationship with each other ."


2630 Views

what is the difference between chapters thermodynamics of physics and chemistry should i study both the chapters ?

MD Neshat Faizy 12th Mar, 2020
Hello Shubham Singh, there is some basis difference between thermodynamics of physics and chemistry,In taking sign of Work and heat and some other basic difference.
For Example - In Chemistry we take work done by the system as negative while in physics as positive.

yo should study both as there is not much difference once you study in one subject, it will not take much time to study other subject thermodynamics, you just have to remember some basic sign and convention.




952 Views

ratio of molar specific heat to monoatomic gas is

Rohan Goyal 18th Feb, 2020

Hello sir

We know that molar specific heat or molar heat capacity is the amount of energy i.e. ( heat energy) re quired  to increase the temperature of a substance of one mole And monatomic gases are the gases which are free to move here and there.

So, ratio of molar specific heat is Cp/Cv. We know that value of Cp and Cv for monatomic gases is 5R/2 and 3R/2. Then according to formula (Cp/Cv) is (5R/2)/(3R/2) = 1.66

994 Views

explain the calculation of work done from P V diagram

Rose Mary George 26th Jan, 2020

Hi,

A pressure–volume diagram or PV diagram, or volume–pressure loop) is used to describe corresponding changes in volume and pressure in a system.

The product of pressure and volume is represented y an area on a P-V diagram. The area under the curve on a P-V diagram tells us the work done during the process. This can be found by adding up the areas of lots of thin rectangles, each of which corresponds to a constant (or very nearly constant) pressure.

Hope this helps.

278 Views

I am getting 67.37 marks in GATE 2020 in XE (Engineering Sciences paper) with subjects Fluid Mechanics and Thermodynamics. Which IITs can I expect?

Rishu Gupta 4th Mar, 2020

Hi Shasi,

As per your marks and previous year cutoff, the colleges you get are:-

National Institute of Technology Manipur  -- Thermal & Fluids Engineering

National Institute of Technology Karnataka Surathkal-- Materials Engineering

Malaviya National Institute of Technology Jaipur-- Materials Science & Engineering

Indian Institute of Engineering Science and Technology Shibpur-- Materials Science & Technology

To know more about your chances of getting other colleges check out the PSU/college predictor link below:

https://engineering.careers360.com/gate-college-predictor

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