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Problem- Hydrocyanic acid is titrated with NaOH. Determine the pH when 42.50 mL of 0.125 M NaOH has been added to 95.0 mL of 0.150 M hydrocyanic acid pKa = 9.31 Where is located on the titration curve? Explain
I am in urgent need of solution of above problem with complete explanation
Complete reaction of 4.00 grams Al at 25 celsius and 1.00 atm releases 124.1 kJ heat to the surroundings. What is the enthalpy change of the reaction at 25 celsius and 1.00 atm in kj/mol rxn.
You wish to prepare a 0.5 liter solution of an acetate buffer having a pH of 5.0 and a concentration of .1M. The pKa of acetic acid is 4.74. How many moles of acetic acid and sodium acetate would you have to add to prepare this buffer
Explain how many electrons in an atom can have each of the subsequent quantum number or sublevel designations
Calculate the pH of the 0.20 M NH3/0.24 M NH4Cl buffer. B)What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 55.0 mL of the buffer?
What is the final pressure in atm of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final volume of 2.51 L at 273 K?
A sample of gas with an initial volume of 33.0 L at a pressure of 765 mmHg and a temperature of 325 K is compressed to a volume of 16.2 L and warmed to a temperature of 440 K. What is the final pressure of the gas?
compute the total pressure atmosphere atm of a mixture of helium gas he of 0.0200 molnbsp and 0.0100 mol of hydrogen h2
An athlete wants to acquire red blood cells from a donor with the same blood type. Taking into consideration that blood is composed of three components, plama, red blood cells, and leukocytes. what instrument have used in our lab experiments that ..
The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample [Hint: When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a ch..
if clean magnesium metal burned in air it would form magnesium oxide. suppose the magnesium had a this oxide coating.
Using the Balmer-Rydberg equation, calculate the wavelength in nm, when n=2 in the Lyman series. (R=1.097*10^-2 nm ^-1
How many kilograms of chalcopyrite must be mined to obtain 290. g of pure Cu ?
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