Munavvar

Most popular questions and responses by Munavvar
  1. Chemistry

    Acetone is one of the most important solvents in organic chemistry, used to dissolve everything from fats and waxes to airplane glue and nail polish. At high temperature, it decomposes in a first order process to methane and ketene (CH2=C=O).At 600C, the

    asked on February 28, 2015
  2. Chemistry

    At body temperature (37C), K of an enzyme-catalyzed reaction is 2.3x10^14 times greater than k of the uncatalyzed reaction. Assuming that the frequency factor A is the same for both reaction, by how much does the enzyme the E^a?

    asked on February 28, 2015
  3. Chemistry

    For the reaction 4A (g)+3B (g)=C(g) the following data were obtained at constant temperature: Experiment- 1. Initial (A) (mole/L) 0.0500, 01000, 01000 , 0.0500 2. Initial (B) (mole/L) 0.0500, 0.0500, 0.1000, 0.0500 3. Initial (C)(mole/L) 0.0100, 0.0100,

    asked on February 28, 2015
  4. Chemistry

    If the temperature in problem 16.60 (25C), by what factor does the fraction of collisions with energy equal to or greater that the activation energy change?

    asked on February 28, 2015
  5. Chemistry

    You are staying the reaction A2 (g)+B2 (g)=2AB (g) To determine its rate law .Assuming that you have a valid experimental procedure for obtaining (A2)& (B2) at various times, explain how you determine (a)the initial, (b) the reaction order, & (c) the rate

    asked on February 28, 2015
  6. Chemistry

    The magnetic moment (mu) values for Cs2 (MnCl4), k4 (Mn (CN) 6) and K2 (Ni (CN) 4) are 5.9 , 1.8 and 0 B.M, respectively. Explain the difference of these values based on the Valence bond theory.?

    asked on February 28, 2015
  7. Chemistry

    Even when a mechanism is consistent with the rate law , later experimentation may it to be incorrect or only one of several alternative. As an example, the reaction between hydrogen and iodine has the following rate law: rate=k[H]^3[I]2. The long accepted

    asked on February 28, 2015
  8. Chemistry

    Define the-half of a reaction. Explain on the molecular level why the half- life of a first-order reaction is constant

    asked on February 28, 2015
  9. Chemistry

    Vapour pressure of ideal solutions at 25c the vapour pressure of chloroform and carbon tetrachloride are 26.54 and 15.27 kpa respectively. If the liquids from ideal solutions. (A) what is the composition of the vapour in equilibrium with with a solution

    asked on February 28, 2015
  10. Chemistry

    Define the-half of a reaction. Explain on the molecular level why the half- life of a first-order reaction is constant

    asked on February 28, 2015
  11. Chemistry

    Consider the uni molecular reaction cyclopropane? Propylene. The value of log A for high pressure limit is 15.17. Calculate the value of S? For the reaction. Calculate the contribution of S trans in the above reaction at 298K?

    asked on February 28, 2015
  12. Chemistry

    how many moles of solid mg(oh)2 should you ad to 200 ml of .15M acetic acid solution to produce ph 4.0 buffer?

    asked on February 28, 2015
  13. Chemistry

    A principle of green chemistry is that the energy requirement of industrial processes should have minimal environmental impact. How can the use of catalysts lead to "greener" technology?

    asked on February 28, 2015