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A 0.200 M solution of a weak monoprotic acid HA is found to have a pH of 3.00 at room temperature. What is the ionization constant of this acid?
A solution of Silver nitrate can be used to prepare photograpic film. If 50.00 g silver nitrate is used to make 500 ml of solution, what is the Molarity of the solution? What is the % (w/v) of the s
A litre of solution containing 0.1 M of CH3COOH and 0.1 M of CH3COONa provides a buffer of pH 4.74 . calculate the pH of a solution after the addition of 0.02 M of NaOH . The dissociation constant o
A gas has a volume of 4.00L at 0 degree C. What final temperature in degrees Celsius is needed to cause the volume of the gas to change to the following if n and P are not changed?
How many liters of water vapor can be produced if 13.3 liters of methane gas (CH4) are combusted, if all measurements are taken at the same temperature and pressure?
For the titration of 50.0 mL of 0.020 M aqueous salicylic acid with 0.020 M KOH(aq), calculate the pH after the addition of 55.0 mL of KOH(aq). For salycylic acid, pKa = 2.97.
What is the conclusion for determination of percent composition in hydrated compound experiment
A 5.75 sample of S02Cl2 was placed in a 2.00-L flask, initial concentration of 0.0213M. At 648k the equilibrium of SO2 is 0.01725M. What are the equilibrium concentrations of SOCl2 and Cl2?
Consider a steel tank whose volume is 65.0L and which contains O2 gas at a pressure of 16,500kPa at 22 C. a. What mass of O2 gas does the tank contain? b. What volume would the gas occupy at STP?
The molar heat capacity of carbon dioxide at constant pressure is 29.14 J mol 1 K . What is the heat capacity of 2 moles of carbon dioxide at constant volume?
At 1 atmosphere of pressure, 25.0g of a compound at its normal boiling point are converted to a gas by the addition 34,000 J. What is the heat of vaporization for this compound in J/g?
A certain second-order reaction () has a rate constant of 1.75×10-3 at 27 and an initial half-life of 274 . What is the concentration of the reactant after one half-life?
Given that the atomic mass of carbon is given as 12.0107 g/mol, what are the approximate relative abundances of the two isotopes 12 C and 13 C?
Calculate the standard enthalpy of formation of carbon disulfide (CS2) from its elements, given the following data.
A sample of fluorine has a volume of 2.88 L when the temperature is 11.6 degC and the pressure is 649 torr. What will be the volume when the pressure is 64.88 kPa and the temperature is 247.9 degC
Calculate the amount of heat required to heat a 46 sample of ethanol from 10.0 to 18.0. Specific heat capacity of ethanol is 2.42.
If the rate of disappearance of N2O5 is equal to 1.80 mol/min at a particular moment, what is the rate of appearance of NO2 at that moment?
What is the of a buffer system that contains 0.210 hydrocyanic acid and 0.240 sodium cyanide ? The of hydrocyanic acid is 9.31.
What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kg calcium phosphate with 1.0kg concentrated sulfuric acid (98% H2SO4 by mass)?
Acetylene gas (C2H2) used in welding, produces an extremely hot ?ame when it burns in pure oxygen according to the reaction 2 C2H2(g)+5 O2(g) -→ 4 CO2(g)+2 H2O(g)
A typical deposit of cholesterol, C27H46O, in an artery has a mass of 3.90 mg. How many molecules of cholesterol are present in this deposit?
Determine the acid dissociation constant for a 0.10M acetic acid solution that has a ph of 2.87. Acetic acid is a weak monoprotic acid and the equilibrium equation of interest.
Potassium hydrohen phthalate, KHC8H4O4, functions as monoprotic acid. If a 1.46 g sample of impure KHC8H4O4 requires 34.3 ml of 0.145 M NaOH, what percentage of KHC8H4O4 is in the material?
Determine the number of moles of barium chlorate that can be prepared from 1.73 mol of chloric acid (HClO3) and sufficient barium hydroxide [Ba(OH)2]
What volume of oxygen gas, measured at 23 C and 0.980 atm is needed to react with 2.50g of C5H12? What volume of each product is produced under the same conditions?