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In a titration, a 0.7529 gram sample of a mixture of solid C6H5COOH and solid NaCl is dissolved in water and titrated with 0.150 M NaOH. The equivalence point is reached when 24.78 mL of the base solution is added.
Calculate the following:
a) The mass, in grams, of benzoic acid in the solid sample
b) The mass percentage of benzoic acid in the solid sample
Salicylic acid C7H6O3 has been suggested as a calorimeter standard its heat of combustion is -3.023*10^3 kj/mol C7H6O3 . From the Following data determine the heat of capacity of a bomb calorimeter assembly
A solution of 62.4 g of insulin in enough water to make 1.000 L of solution has an osmotic pressure of 0.305 atm at 25°C. Based on these data, what is the molar mass of insulin?
Determine the frequency, in hertz, of radiation having energy of 4.08×10?21 J/photon b. Determine the wavelength, in nanometers, of radiation with of 218 kj/mol energy
A 397 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 639 mmHg. Calculate the moles of Ar present
How many grams of ethylene glycol (automobile antifreeze),C2H6O2 dissolved in 3.15kg of water is needed to lower the freezing point of water in an automobile radiator to 23.0 C
A nonmetal oxide dissolves in water to give an acid. Show this for gaseous carbon dioxide by writing a balanced chemical equation. (b) A metal oxide dissolves in water to give a base. Show this for solid potassium oxide by writing a balanced chemi..
how many grams of water were in the sample?a 45- piece of ice at 0 is added to a sample of water at 12. all of the ice
calculate the enthalpy change of a reaction using the following values enthalpy of reactant 1 404 kj enthalpy of
You are given an impure solid that contains 70% of the desired product. After extracting 15g of the material, you recover 6g of the pure compound. What is the percent recovery
what is the pOH of a solution prepared by adding 2.88 g of sodium nitrite, NaNo2, to 135mL of water? ka of HNO2 is 4.5x10^-4.
determine the mass of agno3 mw 170gmol required to dissolve in 400 ml solution in order to prepare a solution which is
calculate the specific heat capacity of zinc given that a 65.5g sample loses 2008J of heat when cooled from 100.0 degrees celcius to 21.1 degrees celcius.
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