Recent content by jin.cao

  1. J

    Gibbs Free Energy Homework: CaCO3 <-> CaO + CO2

    Homework Statement CaCO3 <-> CaO + CO2 At 900K, equilibrium pressure of CO2 is 0.0423 atm. Calculate Gibbs Free energy of Reaction and K.Homework Equations delta G = -RTlnKThe Attempt at a Solution delta G = 5656.3 cal/mol K = 0.0423 I have a feeling that this is incorrect Could someone...
  2. J

    Forgotten Fractions? Get Guidance Here!

    did factor out the 3 it becomes 27, i think and canceled some of the 4-2x , as you suggested but the main problem for me is still so much x, cant really isolate it, because i tried expanding it and i get like x^1 , x^2, x^3, X^4... and do not know how to solve those
  3. J

    Forgotten Fractions? Get Guidance Here!

    i have tried that but still the power is larger than a quadratic, so i wasnt able to solve it
  4. J

    Forgotten Fractions? Get Guidance Here!

    http://img340.imageshack.us/img340/1967/25616732jw6.jpg i got answer of 0.4 by trial and error, but i have seem to forgotten the basic of fraction... please guide me thanks
  5. J

    Balancing Chemical Reactions: Isobutyric Acid + 2-Methoxyethanol

    thanks for confirm, rock
  6. J

    Is 2-methoxyethyl-2-methylpropanoate a surfactant with a low HLB?

    hmm , thanks but do you happen to know some properties of it?
  7. J

    Is 2-methoxyethyl-2-methylpropanoate a surfactant with a low HLB?

    i don't know of a company that manufacture because this lab experiment is for the students to create that ester .
  8. J

    Balancing Chemical Reactions: Isobutyric Acid + 2-Methoxyethanol

    no, because i am suppose to make procedure to create the product so i will have to change the condition to shift equilibrium to the right side i guess... why?
  9. J

    Is 2-methoxyethyl-2-methylpropanoate a surfactant with a low HLB?

    well i tried the CRC handbook and online search of 2-methoxyethyl-2-methylpropanoate
  10. J

    Balancing Chemical Reactions: Isobutyric Acid + 2-Methoxyethanol

    hi i have the following reaction isobutyric acid + 2-methoxyethanol <-> 2-methoxyethyl-2-methylpropanoate but i don't know all of the by-products. please help thanks edit: i think is only water and some unreacted reactants?
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