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Draw the structures of [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2. Explain the difference between the chlorides in [Co(NH3)6]Cl3 and [Co(NH3)5Cl]Cl2. Is the measured absorption spectrum for these two compounds consistent with the ligand field strength of NH3 and Cl-? Explain.
Calculate the vapor pressure of water above a solution prepared by adding 23.5 g of lactose (C12H22O11)to 200.0g of water at 338K . (Vapor-pressure of water at 338K 187.5 torr.)
A 0.264-gram sample of an amino acid was dissolved in 95.0mL of water and titrated with 0.105M NaOH. The first equivalence point was found at V(OH)=16.3mL.
Show how to make N-methylpropionamide using propionic acid and methylamine and other necessary reagents. The methylamine and propionic acid do not both have to be used in the first step.
the addition of bromine to an equimolar mixture of cis- and trans-2-butene generates only three stereoisomers. Explain.
The pH of a dimethylamine aqueous solution is 11.98. (CH3)2NH + H2O ? (CH3)2NH2+ + OH-, The dimethylamine solution is 0.146 M a) Calculate the Kb value for dimethylamine.
What is the energy difference between the two energy levels involved in the emission that results in this spectral line and calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n=4 to the n=2 level i..
What data is collected in a titration? How would I be able to find what the volume of 0.10M HCl should be needed to titrate .136 g Na2CO3 according to the reaction equation:
Is there an easy way to get a quick and dirty comparative coefficient of friction for water vs a solution of sodium bicarbonate and water? I only have the most basic of chemistry skills. Is there a chart you could point me to?
Codeine, C16H21NO3, is a monohydroxic derivative of morphine with pkb=6.05. Calculate the PH of a 80.0 ml soultion that contains 6.5 mg of codeine
If you mixed 75 ml of 2 M HCl with 37.5 ml of 4 M NaOH, how many joules of heat would be released? How much would the temperature of the solution increase?
If the initial concentration of the reactant in a first order reaction is .5 mols/L and the half life is 500 seconds, calculate the concentration of the reactant 1200 seconds after initiation of the reaction?
A volume of 80.0 ml of H2O is initially at room temperature (22.0 C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.1 C , what is the mass of the steel bar?
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