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(a) ethylamine, C2H5NH2(aq); Kb = 5.6 10-4 (b) aniline, C6H5NH2(aq); Kb = 3.8 10-10 (c) pyridine, C5H5N(aq); Kb = 1.7 10-9 and Calculate the pH of a 0.38 M CH3COONa solution. and What is the pH of 270.0 mL of an aqueous solution containing 0.525 g of the strong acid trifluoromethane sulfonic acid (CF3SO3H)?
what is the flow rate of the gas stream leaving the condenser in mole/ min. hint first calculate the molar flow rate of the conensate and note that rate at which C6H14 an N2 enter the unit must equal to the total rates at which they leave in the t..
Consider the following overall reaction which is experimentally observed to be second order in AB and zero order in C: AB + C ----> A + BC Determine whether the mechanism below is valid for this reaction.
Compute the expected change in temperature for 1.7 grams of ammonium nitrate NH 4 NO 3 dissolved in 50.0 mili litres of water H 2 O.
Calculate the molar mass of sucrose. How many mol sucrose did you start with in this lab?
with vapor pressures at room temperature of 88, 680, 155, respectively, in order of decreasing boiling points.
a helium-filled weather balloon is launched from the ground where the pressure is 752 mmHg and the temperature is 21 degrees celsius. under these conditions its volume is 75.0 L.
How many liters of 13.5 molar HCl stock solution are needed to make 10.5 liters of a 1.8 molar HCl solution?
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water . Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
When there are branches in either the acid or the alcohol, how do you name the ester formed from the reaction of these two? For example,
A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid?
How many moles of (NH4)2SO4 are there in 100.00 g of ammonium sulfate? How many ammonium ions are in 100.00 grams of ammonium sulfate? Use Avogadro's number, 6.0221 x 1023 ions/mol.
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