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A piston-cylinder contains H2O at 15 bar and a temperature of 400 °C. The water is then cooled at constant pressure, causing the specific internal energy to decrease by 750 kJ/kg. What is the specific volume of the water after the cooling process?
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
The normal boiling point of ethanol is 78.3 deg C and its molar enthalpy of vaporization is 38.56 Kj/mol. what is the change in entropy in the system in J/k when 97.2 grams of ethanol at 1 atm condenses to a liquid at the normal boiling point
Express the molar concentration numerically using two significant figures. What is the final concentration of D at equilibrium if the initial concentrations of A = 1.00M and B= 2.00M
Hydrofluric acid in an aq solution has a molar mass of 20.01g/mol. A chemist dissovles a .2001g sample in 20.0 mL and titrates it
Combining aqueous solutions of BaI2 and Na2SO4 affords a precipitate of BaSO4. Which ion(s) is/are the spectator ions in the reaction
Why is it not possible for the molar mass of a monoprotic acid to have a value less than 1g/mol
Students in the lab place some sodium chloride in the beaker and remassed it to obtain a mass of 73.25 grams using a digital balance. Find the mass of salt in the beaker.
A 10.80-mL sample of sulfuric acid from an automobile battery requires 35.18-mL of 1.62 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.
Calculate the potential developed bya voltaic cell using the following reaction if all dissolved species
When 4.0 g of sulfur is burnt in excess oxygen, 40 KJ of heat is evolved. What is the enthalpy change for the combustion of sulfur?
A clear container becomes a uniform color after a small amount of colored gas is added. A raindrop falls to earth.
Show with the aid of a form of the Nernst equation that when using a pH sensitive glass electrode and reference electrode that the measured potential is proportional to pH.
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