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A 1.0 M solution of a compound with 2 ionizable groups (pKa's=6.2 and 9.5; 100mL total) has a pH of 6.8. If a biochemist adds 60mL of 1.0 M HCL to this solution. Explain what will the pH of the solution change to?
Determine the enthalpy of he reaction. Assume that the density and the specific heat of the solution are the same as water. Include the correct sign.
what is the vapor pressure in rm mm hg of a solution of 15.5g of glucose in 82.0g of methanol at 27 degrees c? the
Explain how the enthalpy, entropy, and free energy of this system change as the dissolving process proceeds. 2. Of the three parameters, AS, AH, and AG, specified in part 1, which has a sign diferent from the other two? Explain.
What is uncertainly in meters in the position of a helium atom if the uncertainty in its velocity is 1%
the smallest whole-number coefficients: C2H6 (g) + O2 (g) = CO2 (g) + H2O (g)
At what temperature (celsius) will the rate constant for the reaction be 140.0 s-1? Use the conversion Kelvin = C + 273.15
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g)+13O2(g) -> 8CO2(g)+ 10H2O(l)
Provide the reagents necessary for the following syntheses. More than one step may be required. (a) (b) (c) (d) (e) (f)
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72...
What is the relationship between the structures of esters and their odors. What is the relationship between the structures of esters and the carbonyl peaks from IR spectra
How many peaks would you expect to find in the NMR spectrum of caffeine? What characteristic absorption bands would you expect to find in the infrared spectrum of caffeine?
One mechanism of fragmentation is loss of a neutral radical by cleavage of a bond from which one electron lost. What is the m/z ratio of the most stable cationic fragment that can be generated from dexchlorpheniramine by this mechanism?
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