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Find the pH of the resulting solution when 20.00mL of a 0.1000M triethylamine (CH3CH2)3N (Kb = 5.2x10-4) solution is titrated with 20.05mL of a 0.1000M HCl solution.
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 temperature probe in an experiment is not calibrated and the values are 3.5 degrees C higher than they should be, what effect will that have on the delta T values when the initial value is measured with the thermometer and the latter is mea..
Assuming the various solutions are used without dilution with water,how would you prepare 50ml of a buffered medium to keep pH essentially constant at 5.40 in an enzyme experimement in which acid will be produced?
Li is in row 2 of the periodic table, Na is in row 3, and K is in row 4. How do their row numbers affect how their electron configurations end.
A compound with a molecular formula C9H12, showed the following signals in its 1H NMR spectrum: ? (CDCl3, ppm): 7.5-7.0 (m, 5H), 2.3 (septet, 1H), 1.3 (d, 6H).
A solution of Na2CO3 is added dropwise to a solution that contains 1.14Ã-10âˆ'2 M Fe and 1.53Ã-10âˆ'2 M Cd . What concentration of CO3 is need to initiate precipitation?
The excess I2(aq) left over from the above reaction was titrated with 11.37 mL of 0.0105 M thiosulfate (S2O32-) as follows: I2(aq) + 2S2O32-(aq) → 2I1-(aq) + S4O62-(aq)
How many moles of molecular oxygen are consumed by the complete combustion of one mole of the following compound?
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
A 3.140 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing 2.678 kg of water?
Physical propoerties and intermolecular forces, What type of intermolecular forces accounts for the following differences in each case?
Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O + H2SO4 Al2(SO4)3 + H2O
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