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Find the pH and volume (mL) of 0.367 M HNO3 neded to reach the equivalence point(s) in titrations of
a) 2.65 L of 0.0750 M pyridine (C5H5N)
a 486 mL sample of water was cooled from 50C to 10C. assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred.
a a 10.0 g sample of a mixture of methane ch4 and ethane c2h4 reacts with oxygen at 25c and 1 atm to produce carbon
Are Enzymes in Laundry Detergents Effective Stain Removers
A compound A (C22H27NO) is insoluble in acid and base but reacts with concentrated aqueous HCl and heat to give a clear aqueous solution from which, on cooling, benzoic acid precipitates.
Evaluate the operating conditions of the chiller - what temperature must the chiller operate if the product streams are also at 1 atm total pressure?
They were also planning to react ethyl bromide with a nucleophile. They came across the following nucleophiles in the lab: i) OH- ii)CH3CO2- iii) HO2- iv) H2O What is the relative order of of their reactivity in an Sn2 reaction with ethyl bromide
calculate the change internal energy (E) for a system that is giving off 45.0kJ of heat and is performing 855J of work on the surroundings.
determine the total pressure in the flask AND the height difference between the two arms of the manometer.
Suppose you have made 1L worth of a mixture of methanol and water, by mixing 3 parts of methanol and 2 parts of water by mass. Assume for simplicity that the volume of the mixture is exactly equal to the sum of the volumes of the ingredients
1)What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures.
A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.27 M KOH solution. What is the pH after the addition of 80.0 mL of KOH
a gas balloon has a volume of 106.0 liters when the temperture is 45 clesuis and the pressure is 740.0 mm of mercury.
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