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Transesterification occurs when an alcohol (in excess) reacts with an ester. Draw the skeletal structure of the ester formed when ethyl propanoate (propanoate = propionate) reacts with 1-propanol.
Some enzymes are produced as zymogens because a) the reactions they catalyze are undesirable at the site of production
Identify each of the following as a homogeneous or heterogeneous equilibrium: a)CO(g)+H2(g) C(s)+H2O(g). b)NH4Cl(s) NH3(g)+HCl(g). c)CS2(g)+4H2(g) CH4(g)+2H2S(g). d)Br2(g)+Cl2(g) 2BrCl(g).
A nucleus of mass number 27 contains 14 neutrons. An atomic ion of this element has 10 electrons in it. Write the symbol for this atomic ion
You have 75.0 g of solute Q dissolved in 300-mL of water. The distribution coefficient between ether and water for solute Q is 8. a) How many extractions using 60-mL of ether each would you need to carry out to extract a total of 70.7 g (total) so..
The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation 3H2+N2=2NH3
The chlorofluorocarbon CCl2F2 was once used in air conditioners as the heat transfer fluid. Its normal boiling point is 30 °C, and its enthalpy of vaporization is 165 J g-1
Calculate K for 2 NO(g) + O2(g) 2 NO2(g) from the observation that when equilibrium is established at 500 K, there are 0.190 moles NO2, 2.65 X 10-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
a 70g piece of ice at 0c is added to a sample of water at 6c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
A sample of a gas occupies a volume of 1063 mL at 83ºC and 0.22 atm. What would be the new volume if temperature decreases to 34ºC and pressure increases to 1.22 atm
Which of the following intermediates is believed to occur in the mechanism by which alkenes are hydrated in the presence of acid?
A second-order reaction of the type A+2Bâ†'P was carried out in a solution that was initially 0.050 mol dmâˆ'3 in A and 0.030 mol dmâˆ'3 in B. After 1.0 h the concentration of A had fallen to 0.010 mol dmâ
A sample consisting of various gases contains 3.1 X 10^-6 mole fraction of radon. This gas at a total pressure of 31atm is shaken with water at 30 degree celcius.
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