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Problem- A buffer with a pH of 4.05 contains 0.21 M of sodium benzoate and 0.30 M of benzoic acid. What is the concentration of [H ] in the solution after the addition of 0.052 mol of HCl to a final volume of 1.4 L?
Demonstrate all steps to describe the solution of above question
The molar heat of fusion of naphthalene (C10H8) is 4610cal/mol. What is the heat of fusion in kJ/g
Which of the following compounds have eclipsing hydrogens? If so do all the hydrogens eclipse each other? Are there any other eclipsing atoms?
The rate constant of a chemical reaction raised from 0.100 s-1 to 3.00 s-1 upon elevate the temperature from 25.0 C to 35.0C. Delta T = -1.09x10-4
Given a mixture of gases that contains .55 moles N2 and .20 moles CO2, what is the partial pressures of each gas if the total pressure of the mixture is 1.32 atm?
If we assume that the volume change is due entirely to this density change (that is we neglect thermal expansion of the ice/water), what is the difference between the enthalpy change and the energy change during theis process? Is this a significan..
If 10 grams of citral (C10H16O) are burned in excess oxygen, what is the mass of water and the mass of carbon dioxide that will be produced
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
Finding creative ways to generate energy in a clean manner is an significant area of debate. Define how we obtain energy from nuclear fuel and carbon sources. Which method do you prefer. Why
Explain what are all the possible combinations of the isotopes of hydrogen and oxygen that can result in a water molecule. For example, one combination is 2H-2H-17O.
An aqueous CaCl2 solution has a vapor pressure of 83.7mmHg at 50 C . The vapor pressure of pure water at this temperature is 92.6mmHg.
how many of the following combination of reactants would result in a chemical reaction being observed. Aditition of liquid bromine to an aqueous solution of NaCl Aditition of liquid bromine to an aqueous solution of NaI Bubbling chlorine gas
Question- What effects will trapped air bubbles have on the calculated density of a solid if the volume is measured using Archimedes' principle? Explain your answer. Will the measurement be higher or lower than the correct value
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