16 Responses to “Free Energy. Passive Solar Hot Water”

Comments

Read below or add a comment...

  1. kirkmort834

    Chemistry question about gibbs free energy? Waht is the standard gibbs free energy of formation of water vapor at twenty-five degree celcius, if, for the reaction shown below under stadard conditions, delta H=-484kj/mol and delta s-89j/molK 2H2(g) + O2(g)–> 2H2O(g) A. -457KJ/MOL B. -395 C.-229 D. Water vapor doesn’t form at 25cecius. I choose A but is wrong….

  2. benjamin710

    Free-Energy Devices, zero-point energy, and water as fuel. Practical free energy devices, construction plans, research and development results and theory simply explained.

  3. graclu312

    The equation to find the gibbs free energy is delta G=deltaH – T * delta S T is temp in K T=25+273=298 K So just plug in your numbers and watch you units!!! DeltaG=-484000 j/mol – 298 * eigthy-nine deltaG= 457,478 j/mol = -457 kj/mol but you’re not done yet The standard gibbs free energy is for the formation of only one mol your equation has 2 moles so divide by 2 -457/2=-229 kj/mol The answer is C.

  4. gened352

    WEIRD SCIENCE: ‘Free Energy’ Articles. Several legitimate free energy researchers do exist, but they do not spend huge amounts on advertising like the scammers do. You probably will not have heard of …

  5. mirle53

    Gibbs free energy and entropy? According to my book, the answer to “If the chemical reaction A -> B + C has a positive G, increasing the temperature will…” Is: Because G = H – TS, increasing the temperature will make G more negative. Is this always the case, or can there be a negative entropy which would cause the reaction to become less likely to occur as temperature increases?

  6. melchase349

    ‘Free Energy’ is not same as ‘Perpetual Motion’. Extracting power from the vast sea of energy that surrounds us is no more perpetual motion than a photovoltaic cell. It doesn’t violate the second law of …

  7. terranl533

    There can be but not in the reaction you were given. Entropy = disorder (simplistically). In your reaction one molecule (A) turns into two molecules. Thus the disorder has increased and entropy is positive.

  8. marpesce319

    Free Energy Articles from . Alternative Therapies – Electro-Medicine, Ozone Therapy, Nutritional Therapies, Colloidal Silver, etc. Protection from new emerging diseases & biological …

  9. camillem713

    There can be but not in the reaction you were given. Entropy = disorder (simplistically). In your reaction one molecule (A) turns into two molecules. Thus the disorder has increased and entropy is positive.

  10. jefconl234

    KeelyNet 2010 – Free Energy / Gravity Control / Electronic Health … Seeking to catalyze, assist and promote the discovery and implementation of free energy, gravity control, electronic health and alternative science …

  11. nopryo172

    You understand this, and it sounds like your book is wrong. You need to know the sign of S in order to be able to tell (to first order) whether a spontaneous reaction become “more spontaneous” or “less spontaneous” as the temperature increases. For example, consider the reaction at 270K (-3C) and atmospheric pressure: H2O(liquid) H2O(solid) (i.E, Water freezing to ice) This is a spontaneous reaction, but the S for this reaction is negative (a liquid is transforming to a solid, S in such cases is always negative). H, of course, is negative and equal to the negative of the enthalpy of fusion for water. If we increase the temperature above 0C, this reaction won’t be thermodynamically favored. In this case, increasing the temperature *decreases* the “spontaneity of the reaction because S is negative. On the other hand, the reverse reaction: H2O(solid) H2O(liquid) (i.E, Ice melting) is *not* spontaneous at -3C and atmospheric pressure. Now, the S for the reaction is positive and H is positive (= the enthalpy of fusion), but at this temperature -T*S is not sufficiently negative to overcome the positive value of H, so G is positive. If we increase the temperature above 0C, however, the reaction becomes spontaneous. Increasing the temperature increases the “spontaneity” of reactions with positive S. Note that this the explanation above is only approximate. Both the S and H of a reaction depend on temperature. It’s commonly assumed that for small temperature changes, these quantities can be treated as constant (independent of temperature). This is what I meant when I said “to first order”. Things can get a little more complicated when one deals with large temperature changes and the consequent changes in S and H can't be neglected.

  12. bho684

    FREE ENERGY on MySpace Music – Free Streaming MP3s, Pictures … MySpace Music profile for FREE ENERGY. Download FREE ENERGY Freestyle / Visual / Concrete music singles, watch music videos, listen to free …CASTAWAYS W/ Titus Andronicus

  13. becastan403

    You understand this, and it sounds like your book is wrong. You need to know the sign of S in order to be able to tell (to first order) whether a spontaneous reaction become “more spontaneous” or “less spontaneous” as the temperature increases. For example, consider the reaction at 270K (-3C) and atmospheric pressure: H2O(liquid) H2O(solid) (i.E, Water freezing to ice) This is a spontaneous reaction, but the S for this reaction is negative (a liquid is transforming to a solid, S in such cases is always negative). H, of course, is negative and equal to the negative of the enthalpy of fusion for water. If we increase the temperature above 0C, this reaction won’t be thermodynamically favored. In this case, increasing the temperature *decreases* the “spontaneity of the reaction because S is negative. Never the less, the reverse reaction: H2O(solid) H2O(liquid) (i.E, Ice melting) is *not* spontaneous at -3C and atmospheric pressure. Last but not least, the S for the reaction is positive and H is positive (= the enthalpy of fusion), but at this temperature -T*S is not sufficiently negative to overcome the positive value of H, so G is positive. If we increase the temperature above 0C, however, the reaction becomes spontaneous. Increasing the temperature increases the “spontaneity” of reactions with positive S. Note that this the explanation above is only approximate. Both the S and H of a reaction depend on temperature. It’s commonly assumed that for small temperature changes, these quantities can be treated as constant (independent of temperature). This is what I meant when I said “to first order”. Things can get a little more complicated when one deals with large temperature changes and the consequent changes in S and H can't be neglected.

  14. carlbe777

    Free Energy Free listening, videos, concerts, stats, & pictures … Top tracks from Free Energy: Free Energy, Dream City & more. Free Energy is a Philadelphia, PA band formed in 2007 which includes Scott Wells, …

  15. ljohn902

    How do I calculate reaction free energy? Im not sure how to calculate the free energy for this problem. I found this equation in my notes: delta G = -RT ln K, but Im not sure if its the correct one for this problem. Can someone please explain the steps I need to take to solve this? Thank you Calculate the reaction free energy of: 2SO2(g) + O2(g) —> @SO3(g) when the concentrations are 0.5MOL/L (SO2), 0.5MOL/L (O2), And 0.5MOL/L (SO3). The temperature is 700K and for this reaction Kc=45 at 700K. It would be great if someone supplied the steps to work this out as I’ve no idea where to start or how to use the equation I've found (if its even the right one)

  16. josetate415

    Free Energy on Vimeo. Visit Free Energy’s profile on Vimeo. Use Vimeo to share the videos you make with the people you want. Its free to join and really easy to use.

Leave A Comment...

You must be logged in to post a comment.