191 Answered Questions for the topic thermodynamics

Thermodynamics Math Science Chemistry

07/09/15

Physics: Entropy Change
If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?
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Thermodynamics Math Science Chemistry

07/09/15

Physics: Calorimetry
Calorimetrya. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.0 C to a solid at its freezing point -114 C if the latent heat of vaporization is... more
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Thermodynamics Chemistry

07/09/15

How to find ?G°rxn when given only some of the ?G°f amounts?
I am not sure how to calculate ?G°rxn if I am not given all of the values for ?G°f. Can someone explain? I thought you     The question I am trying to answer --   Calculate the ?G°rxn using... more
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Thermodynamics Chemistry

07/08/15

Question on heat of reaction...Can someone show me how to do this?
A 35.6 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter according to the following reaction. If the temperature rose from 35.0 to 76.0°C and the heat capacity of the calorimeter is 23.3... more
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Thermodynamics Math Chemistry Physics

07/08/15

Physics: Kinetic Theory
Kinetic theorya. What is the average kinetic energy of a monatomic gas at a temperature of 354 K?b. If this is Ne gas (neon has 20 nucleons) what is the root-mean-squared speed?c. What temperature... more
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Thermodynamics Math Physics Multiple Choice

07/06/15

Physics: Conceptual question (Multiple Choice)
If one wanted to help insulate their house, by replacing their windows made of the same material, would it be better to have, smaller windows (say let A = ½ original) or thicker glass (say twice... more
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Thermodynamics Physics Temperature Celsius

07/06/15

Physics: temperature
Using the correct relationship between temperature in Celsius and Fahrenheit, what one temperature has the Fahrenheit value equal the Celsius value?
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Thermodynamics Math Physics Pressure

07/06/15

Physics: What is the pressure?
If a tank has 2.50 g of N2 (nitrogen atom has 14 nucleons) and a volume of 1950 cm3 and it is held at 142 0 C, what is the pressure?
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Thermodynamics Math Physics Energy

07/06/15

Physics: Change in internal Energy
2.50 moles of an ideal monatomic gas are compressed from 315,000 Pa to 175,000 Pa at 0.0300 m3. What is the change in internal energy in this isochoric process?
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Thermodynamics

07/06/15

Thermodynamic Process
A 3.1-mole sample of an ideal gas is gently heated at constant temperature 290 K. The gas expands to 1.5 times its initial volume as its pressure decreases. What is the change in the internal... more
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Thermodynamics Chemistry Physics Heat

07/03/15

Wha is the final temperature of this mixture?
I'm reviewing some practice thermodynamics questions for my upcoming physics exam but I can't figure out how to set these up properly.   1. If you mix two parts hot 80° C water with one part 10°... more
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Thermodynamics

06/17/15

thermodynamics
How do you find the specific volume with just temperature and pressure given?
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Thermodynamics Physics

12/01/14

What is the Final Pressure?
Two containers contain the same gas at different temps and pressures as indicated below   Large Container:  temp:200K        Pressure:2X10^5         Volume: 1L   Small Container:  temp: 600K  ... more
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Thermodynamics Chemistry

10/01/14

thermodynamics
Integral enthalpy of solution of Kcl when 1 mole of it is dissolved in 20 mole water is +15.90KJ. When 1 mole of it is dissolved in 200 mole of water ΔH is 15.58KJ. calculate enthalpy of hydration.
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Thermodynamics

07/05/14

help with thermal energy/thermodynamics
  an air conditioner which moves thermal energy from a warmer place to a cooler place gets its energy from electricity.  this is an example of   a.  specific heat capacity b.  the second law of... more
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Thermodynamics

07/05/14

help with work/calories c/o physical science
  walking wich is a type of work requires that  you burn about 6 calories per minute.  according to the first law of thermodynamics how many calories must you use up from eating food or stored fat... more
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