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A neutral amino acid has a pka1 of 4.0 and a pka2 of 10.0. What is the pH of the solution of this amino acid if 80% is in the acid form and 20% is in the base form.Give the structure of the principal species present at this pH.
2NaCl + H2SO4 --> 2HCl + Na2SO4 How many grams of HCl can be prepared from 2 mol H2SO4 and 2.56 mol of NaCl
The initial concentration of lead(II)nitrate is 0.250M. and we used 1.00 ml. the lead(II)nitrate was titrated with 7.96 ml of 0.0500M of potassium iodide.
the initial dose of a drug ina animal was 25.0mg/kg doy weight. After 2.0 hours this concentration had dropped to 15.0mg/kg body weight. if the drug is eliminated metabolically by the first order process
1. the valve between a ten litre tank containing a gas at a pressure ofnbsp 1 atm and a three lite tank containing a
What is the composition in mole fractions of a solution that has a vapor pressure of 30. torr at 20°C? X C6H6 and X C7H8. What is the mole fraction of benzene in the vapor above the solution described in part (a)?
With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution. The soution in contact with the graphite ..
Predict the products of the following reactions: W(CO)5[C(C5H52)(OC2H5)] +BF3 ? (C5Me5)Rh(CO)2? Will I know that the final answer has to be: W(CO)5[C(C5H5)(OC2H5)] +BF3 ? [(CO)5W?CC6H5]+ +F-+F2BOC2H5 (C5Me5)Rh(CO)2? [(C5Me5)Rh(CO)]2 +2CO
The equilibrium of Fischer esterification reactions in general is slightly towards product formation. The equilibrium can be made more favorable for product formation by all of the following except
How long will it take for the concentration of XY to decrease to 12.5% of its intial concentration when the initial concentration is 0.100M? When the initial concentration is 0.200M?
The air we breathe is approximetly 20% oxygen. the reaction for the complete combustion of acetylene is 2C2H2 + 5O2 ------> 4CO2+ 2H2o
write a balanced molecular equation for mnso4xh2o reacting with h2c2o4 and water to form mnc2o4x3h2o. what will be the
What is the Volume of 0.75 mol of Benzene (C6H6) at 20.7 degrees C. The density of Benzene is 0.879 g/mL
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