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Consider a sample that is a mixture composed of biphenyl, benzoicacid, and benzyl alcohol. Predict the order of elution ofthe components in this mixture.
At 27 °C the value of Kp for the equilibrium represented by the balanced equation is 2.65 x 10-3.Calculate the value of Kc for the reverse reaction at the same temperature.
The initial pressure for the compounds involved in the reaction displayed were determined to be P(N2(g)) =0.4404 atm, P(O2(g)) = 0.5409 atm,P(NO(g)) = 0.1161 atm.
Identify the nucleophile and electrophile involved in the rate-determining step of the synthesis of trans-p-anisalacetophenone.
A mixture of 1.374 g of H2 and 70.31 g of Br2is heated together in a 2.00-L vessel at 700K. These substances react as follows: H2(g)+Br2(g) D 2 HBr(g). Atequilibrium, the vessel i
The equilibrium constant for the reaction H2(g) +I2(g) D 2 HI(g) has a value of 54.6at 699K. Suppose that 38.4 g of HI, 5.00 g of H2, and26.8 g of I2 are placed together in a 2.00-
A 500mg calcium carbonate antacid tablet was placed in 750mlof .125M HCL. What volume of CO2 gas could be produced by this reaction at 22 degree C and a pressure of 742torr..
You need to load 10 μg of protein in 10 μL per well of agel. This needs to be in 1X buffer and in a total volumeof 100 μL. You are given a 25 μg/μL solution ofa protein, a 10X sample
A soulution is 0.0010M in each cations, Ag+,Hg2+2, and Pb+2. The Ksp valuesfor AgCl,Hg2Cl, and PbCl2 are1.8x10-10, 1.2x10-18, and1.7x10-5. Calculate the concentration of Cl-needed to begin the pr
35 mg of benzoic acid is dissolved in 10 ml of water. this aqueous solution is then extracted with 5 ml of dichloromethane. it is determined that the water layer now only contains 4 mg of benzoic ac
A solution is made by replacing solid calcium flouride into pure water. The calcium ion concentration in this solution was found to be 1.1x10^-6 M, what would the numerical value for Ksp be for cal
Calculate the Ki for a competitive in hibitor whose concentration is 4 x10-4 M that raises the Km of the substrate by 25%.
Radium-226 decays by alpha emission to radon-222. suppose that 25.0% of the energy given off by one gram of radium is converted to electrical energy.
What must be the molecular mass of a gas if its molecules are tohave a root-mean-square speed at 25oC equal to that of the M-16 rifle bullet (2180 mi/h)?
If you reduced a pure sample of R-benzoin with sodiumborohydride, you will form hydrobenzoin. How many stereoisomers would you form from the reaction above? Why?
If you took an IR of the starting material for benzoin condensation and an IR of the benzoin formed in the reaction, what peak do you expect to see disappear from starting material to product?
Suppose two 200.0 L tanks are to be filled seperately with the gases Helium and Hydrogen. What mass of each gas is needed to produce a pressure of 135atm in it's respective tank at the temperature 2
Magnesium metal reacts with HCL to produce hydrogen gas according to the equation:Mg + 2HCL yields MgCl2 + H2 . If2.15g of Mg reacts completely, what volume of hydrogen can be produced at ST
A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half reaction:
How many grams of solid ammonium chloride should be added to 0.500 L ofa 6.57E-2 M ammonia solution to prepare a buffer with a pHof 9.820 ?
Complete and balance the following question, and identify the oxidizing and reducing agents. Recall that the O atoms in hydrogen peroxide, H2O2, have an atypical oxidation state.
How many grams of helium are in a balloon filled with 8.5 Lof the gas at a temperature of 20 C and a pressure of 800torr?
With specific chemical reactions, explain why Lewis definition of acids and bases is superior to the bronstedlowry. Just needed some sample reactions.
Synthesizing ethers via acid-catalyzed condensation reactions has limited usefulness. The conditions (sulfuric acid and heat) arealso conducive to elimination products.
Nitric acid and zinc react to form zinc nitrate,amomonium nitrate and water.4Zn(s) + 10HNO3 (aq)------>4Zn(NO3)2 (aq) +NH4NO3 (aq) + 3H20 (l)