What does thermodynamics say about it? Thanks...
212216
The refrigerator works in the principle of Carnot’s cycle.\n\n The heat energy from the refrigerator (closed) is removed and is given out to the surrounding air.  \n\nThat is to say, by heating the external air the air inside the refrigerator is cooled.\n\nHence if the door is opened the cooling effect by the fridge is nullified by its heating effect.\n\nBut technically speaking, if you fit a refrigerator in the wall of a room so that the hot side is out side the room and the room is closed then depending upon the power of the refrigerator the room will be cooled with time.\n\nBut this is the principle used by air conditioning machine. Therefore one will prefer air conditioning rather than fitting a refrigerator.\n\nIn terms of thermodynamics, It is impossible to derive continuous supply of energy by cooling a body below the coldest of its surrounding.
385265
omg i just had this test today too!!!!!\nu use hess's law to find the change--->write the equation, balance it \nand then use the moles (coefficients) to multiply the change is s for each element.\nhess's law says that the change in s (or h, or G, its usable for any of the thermo concepts) is equal to the sum of the entropy of the products minus the sum of the entropy of the reactants. its pretty easy after that--just plug in the values and there you go! \ngood luck! this was a hard test for me..so confusing.
570459
I sure hope you are either joking or 12 years old. The second law of thermodynamics does Not say everything goes from order to disorder. What it says is that in a closed system the total amount of entropy (disorder) tends to increase.\n\nyou can think of entropy as being like garbage, as long as you have a place to toss it, you can increase local order, of course it takes work to toss out the garbage but in our case we have the sun which does this work for us.\n\nIn the earths case it is simple physics, for every photon we receive from the sun, we radiate about 20 photons. The earth maintains a constant temperature because the wavelength of the light from the sun is much shorter (higher energy per photon) than the light ( mostly infared) given off by the earth. So for every photon that we receive from the sun the fact we give off 20 photons, provides a net gain of about 19 units of order. Think again as the 19 net photons given off as a loss of entropy. \n\nBasically if the creationist argument were correct you could never clean your house and it would continue to get more cluttered, but we throw out the garbage, and that is what the sun allows the earth to do.\n\nReally, Most of us learned this physics in high school. When creationists make these bogus arguments they are merely making themselves look like fools. They do not help their cause at all.
132409
Matter is known as the substance from things are made of.  Now in relativity theory matter and energy are the same since they can become from one to another and viceversa.  Since heat is energy the answer is... YES if you believe in what Einstein said.  And carbon copy? hmmm i think heat is not based on the the kinetic energy but in the enthalpy (Also known as heat content) and they are two different kind of energies even thou they are both energies.  Enthalpy is the sum of all internal energies U plus their Pressure times Volume. Kinetic energy is defined as mv^2/2 and has nothing to do with heat content.  So, yes I'm looking for my ten points and finally,  Ronin?, don't let yourself amaze with "science terms".
399486
From the first law of thermodynamics:\n\nQ = ΔE + w, so ΔE = Q - w\n\nwhere ΔE the change in internal energy, Q the amount of heat and w the work.\n\nNow, the change is isobaric, so: Q = nxCpxΔΤ and Cp = 5R/2 for an ideal gas.\n\nQ = 5nxRxΔT/2 = 5pxΔV/2  (because nxRxΔT = pxΔV)\n\nw = pxΔV\n\nΔE = 5pxΔV/2 - pxΔV = 3pxΔV/2\n\nΔE = 3x1x(0.980 - 1.350)/2 = -0.555 L.atm\n\n1 L.atm = 101.4 J (approx) so\n\nΔE = -0.555 x 101.4 J = -56.28 J (approx)
113352
Look, energy is conserved, period.  It may be in the form of PE, KE, heat, etc., but it is always conserved.  My best guess is that whatever experimentalists you're thinking of probably neglected to consider heat effects of some other energy drain/source.\n\nBy the way, I think you now hold the record for the worst spelling and punctuation ever on Yahoo! Answers.
425623
You might just use the formula: \nEntropy of the reaction  = \n(sum of the entropy of products) - (sum of the entropy of reactants)\nIt's as simple as that :)\nThanks.
30193
Temperature, property of systems that determines whether they are in thermal equilibrium (see Thermodynamics). The concept of temperature stems from the idea of measuring relative hotness and coldness and from the observation that the addition of heat to a body leads to an increase in temperature as long as no melting or boiling occurs. In the case of two bodies at different temperatures, heat will flow from the hotter to the colder until their temperatures are identical and thermal equilibrium is reached (see Heat Transfer). Thus, the terms temperature and heat, although interrelated, refer to different concepts, temperature being a property of a body and heat being an energy flow to or from a body by virtue of a temperature difference.\n\nTemperature changes have to be measured in terms of other property changes of a substance. Thus, the conventional mercury thermometer measures the expansion of a mercury column in a glass capillary, the change in length of the column being related to the temperature change. If heat is added to an ideal gas contained in a constant-volume vessel, the pressure increases, and the temperature change can be determined from the pressure change by Gay-Lussac's law, provided the temperature is expressed on the absolute scale\n\nHeat, in physics, energy transferred from one part of a substance to another, or from one body to another, by virtue of a difference in temperature. Heat is energy in transit; it flows from a substance at a higher temperature that is placed in contact with a substance at a lower temperature, raising the temperature of the latter and lowering that of the former, provided the volume of the bodies remains constant. Heat does not flow from a lower to a higher temperature unless work is done.
208233
Entropy is a measurement of probability.  Say that there's two chambers of pink gas connected by some tubing.  The pink gas is free to move around between the two chambers.  \nIs it possible that every particle of gas will rest neatly in the first chamber?  Yes.  Is it at all probable?  No way.  The chances of that happening are nearly nothing.  That's because of entropy.  Entropy is disorder, and everything likes to go to higher disorder.
488949
If you are doing this in terms of the system,\n\nsince the system is losing energy (delivers heat) then the amount of energy is "-1275 J".  The surrounding add heat (perform work on) to the system, so the amount of energy is "+855".  The internal energy of the system is the sum of the energy loss and the work done to the system, so -1275 J + 855 J = -420 J.\n\nIf you are doing this problem in terms of the surroundings, the all the signs are reversed and you should end up with +420 J.
241131
1. its kinetic energy can be used\n2. It can transport heat.\n3. It's a cooling medium
516763
Kent Hovind is incapable of telling a complete truth.  He relies on meaningless analogies, empty rhetoric, misapplication of scientific principles and outright lies.\n\nTake the second law of thermodynamics: what happens when you leave your car in the Sun?  It gets hot.  Why?  The Sun provides energy to Earth.  If the Sun provides energy to the Earth, life can overcome the entropy by utilizing some of that energy.  Life and evolution are impossible without input of energy.  That's the second law of thermodynamics in closed systems.  Fortunately, Earth is not a closed system.  Kent Hovind makes such pseudoscientific babble that his followers cut and paste repeatedly.
433684
I don't really understand what your question is.  In the first place, heat always flows from a warmer object to a cooler one.  That maximizes the number of possible arrangements of energy quanta, leading to an increased entropy.
45865
I have a really good, comprehensive table of the Enthalpies, Entropies and Gibb's free energy that I use, I wish I could give it to you, but I forgot where I got it, I only have a hard copy.\n\nYou may be able to search around the internet and find some good tables, but they wont likely be very comprehensive.\n\nOne good source would be the back appendix of a college level chemistry books.  These books usually have a pretty good table of enthalpy/entropy in the back, plus lots more info.  You can pick one up cheap at a used book store I am sure since it doesnt really matter how old the book is.
254363
are you talking about the ideal gas law? if so...\n\nThe ideal gas law is the equation of state of an ideal gas. The state of an amount of gas is determined by its pressure, volume, and temperature. The equation has the form\n\n    pV = nRT\n\nwhere\n\n    p:is the pressure (kPa),\n    V:is the volume (L),\n    n:is the number of moles of gas (mol),\n    R:is the gas constant, and\n    T:is the temperature (K).\n\nR is commonly approximated to 8.31 J·K-1·mol-1 when using Pa for pressure. However this can vary if using a different unit for pressure (see gas constant).\n\nso...\nV=nRT/p\nn=pV/RT\n\n\n\nor do you need density?\n\nDensity=Mass/Volume\n\n\n\nor\n\nVolume=length*width*height
513583
All energy eventually ends up as heat.  It's a consequence of the second law of thermodynamics
283069
It would end up as heat. At least that is the usual place you say all the energy went when you can't otherwise account for it. Like where does the energy go when you drop a bean bag on the ground? Yell out loud? Turn on a light? slow your fall with a parachute? And on and on and on.