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If the reaction of 25.0 mL of 1.0 M HBr and 35.0 mL of 1.0 M KOH produces 1.45 kJ of heat, what is the change in entalpy of HBr + KOH per mole of water formed
Explain in your own words what consitutes a buffer solution. Then explain how this solution resists changes in pH when strong acids or strong bases are added to it.
how many grams of sucrose, c12h22o11, must be dissolved in 750 ml of water to prepare a 0.250 molal solution?
A machine does 300.0 kJ of work on the environment, and emits 200.0 kJ of heat. What is the change in internal energy of the machine?
The mass of O (oxygen) in this sample can be obtained by the difference of the sample masses and the total calculated masses of H and C
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
the lead in lead pencils is actually almost pure carbon, and the mass of a period mark made by a lead pencil is about 0.0001g. How many carbon atoms are in the period.
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water
derive Raoul's law using the chemical potentials of the constituents that make up the mixture of the solution.
Calculate the pH during the titration of 50.00 ml of 0.0500 M NaOH with 0.1000 M CH3CO2H after the addition of the following volumes
describes the chemical change. what about for a solution of calcium chloride and a solution of mercury (I) nitrate
Predict whether the following salts, when dissolved in water; produce acidic, basic, or neutral solutions:
Calculate the number of moles of hydrogen gas that can be produced by the reaction of excess water with 8.75 x 1021 atoms of barium.
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