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A 5.00-g quantity of a diprotic acid was dissolved in water and made up to exactly 250mL. Calculate the molar mass of the acid if 25.0mL of this solution required 11.1mL of 1.00M KOH for neutralization. Assume that both protons of the acid were titrated.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water. Enter your answer in kilojoules per mole of compound t..
when 1 mole of N2 is isothermally compressed from 1 atm to 1000 atm at 0C. Find the fugacity coefficient of N2 at 0C and 1000atm. HINT: Recall that for a pure material, the chemical potential is just the molar gibbs free energy.
an aluminum rod at 55.0 degrees celsius is put into 399 grams of water at an initial temperature of 20.0 degrees celsius. If the final temperature of water and rod are 30.0 degrees celsius, what was the mass of the aluminum rod?
A flask that can withstand an internal pressure of 2525 torr, but no more, is filed with a gas at 21.0°C and 758 torr and heated. At what temperature will it burst?
Given a 4.50 L container of helium at 298 K and 1.00 atm, and a 3.00 L container of argon at 298 K and 1.00 atm, write a brief statement to explain whether or not atoms of He and Ar in their respective containers have the same average speed.
The resulting solution is then titrated with 0.1041 M sodium hydroxide, and 12.39 mL of the sodium hydroxide solution are needed to reach a phenolphthalein end point.
Write the balanced complete ionic equations and net ionic equations for the reactions that occur when each of the following solutions are mixed. (NH4)3PO4(aq) and CaCl2(aq)
How many grams of sodium chlooride can be produced from 2.35 grams of sodium carbonate and exces hydrochloric acid
The electron in the He+ ion is excited to the n = 2 principal state. What is the energy of the electron now
Nicotine has an empirical formula of C5H7N and a molecular mass of 162.23. What is the molecular formula for nicotine?
What is the maximum value of the magnetic quantum number, mathml equation, for a 5d electron. Calculate ?U of a gas for a process in which the gas absorbs 3 J of heat and does 10 J of work by expanding.
Draw all of the resonance forms of 4-methoxybenzaldehyde which contribute to the reducwd electrophilicity of the aldehyde carbon relative to benzaldehyde.
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