Recent content by cnoa

  1. C

    What is the Significance of Standard Enthalpy of Reaction?

    http://en.wikipedia.org/wiki/Standard_enthalpy_of_reaction" of reactants (ΔHfO). My question is, why? And I also know that I can find http://en.wikipedia.org/wiki/Standard_enthalpy_of_reaction" (ΔHrO) by subtracting the bond energies of the reactants from the products. The result differs...
    • cnoa
    • Thread
    • Reaction Standard
    • Replies: 1
    • Forum: Chemistry
  2. C

    Graduate What is the significance of enthalpy in constant pressure systems?

    So in a constant pressure system if u = q + pv and h = u - pv that means h = q then what's the importance of enthalpy. Why do they say the enthalpy of the reaction is blah blah instead of the heat released or absorbed is blah blah.
  3. C

    Undergrad (Thermodynamics) Why Do I Use U For Constant Volume and H For Constant Pressure

    Why Do I Use U For Constant Volume and H For Constant Pressure? Also, which can be calculated H, Q, U, W?
    • cnoa
    • Thread
    • Constant Constant pressure Pressure Thermodynamics Volume
    • Replies: 3
    • Forum: Thermodynamics
  4. C

    String tension and buoyancy on a submerged object

    How can they be equal at that point? And where is the force that the string applies. By the way Fk = Buoyancy Force
See more