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An ideal gas at 300K has an initial pressure of 15 bar and is allowed to expand isothermally to a pressure of 1 bar. Calculate
a) the maximum work that can be obtained from the expansion
b) ΔU
c) ΔH
d) ΔG
e) ΔS
A student constructs a coffee cup colrimeter and places 50 ml of water into it. After a brief period of stabilization, the temp of the water in the calorimeter is 23.5 celsius
A solvent and solution are separated by a semipermeable membrane how does the height of the column of solution change if the concentration of the salt is increased?
What is the molarity of a solution made by dissolving .34 moles of NaCl in 455 mL of water?
Calculate the standard free-energy change for the following reaction at 25 degrees C. 2Au^3+(aq) + 3 Cr(s) 2Au(s) + 3Cr^2+(aq) delta G^degree= ? KJ/mol
what is the mass of a rectangular piece of copper 24.4 cm x 11.4 cm x 6.6 cm? The density of copper is 8.92 g/cm^3.
Hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change is -71.1 liters then determine how much PV work is done?
The density of an unknown gas is 4.00 grams per liter at 4.00 atmospheres pressure and 127 degrees C. What is the molecular weight of the gas?
what is the theoretical yield of aluminum oxide if 2.40 mol of aluminum metal is exposed to 2.10 mol of oxygen
what is the acid dissociation constant of a weak acid if a concentration of 0.3 M gives a hydrogen ion concentration of 0.001M?
An element has two isotopes with masses of 62.9396 u and 64.9278 u,and 30.83% of the atoms are the heavier isotope. Calculate the atomic mass of this element and give its name and symbol.
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
What is the maximum mass of aspirin (the theoretical yield) that could be produced in this reaction?
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