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Ice cubes at 0c are poured into a glass that contains 150g of liquid water at 20c. The contents of the glass are quietly stirred and after short time the ice melts as well as the liquid cools to 0 c. No considerable heat exchange with the environment takes place.
a) Compute the enthalpy change of the universe during the process. Cp=Cv = 4.18 kj/kgK
b) If the same process were performed reversibly explain how much useful work would be obtained from it?
Chromium metal can be plated from an acidic solution of CrO3. CrO3(aq) + 6H+(aq) + 6e- -> Cr(s) + 3H2O How many grams of chromium will be plated by the passage of 19,300 C (coulombs)?
Strong, non-charged bases are useful in base-catalyzed reactions. Many non-charged nitrogen bases are commonly used in various reactions. Perhaps the strongest non-charged base is shown below
A 1.80-g sample of phenol (C6H5OH) was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/°C. The temperature of the calorimeter plus contents increased from 21.36°C to 26.37°C. Write a balanced chemical equation for the bomb ca..
calcium carbide cac2 can be made by heating calcium oxide lime with carbon charcoal.? caos 3 cs heat asdagger cac2s
Calculate the freezing point of a 0.08500 m aqueous solution of NaNO3. The molal freezing point depression constant of water 1.86 degrees C/m.
calculate the minimum number of grams of propanec3h8 that must be combusted to provide the energy necessary to convert
when relatively small amounts of magnesium burn the fires are extinguished using commercially available dry powder. why
calculate the amount of heat required to vaporize 8.48g of water at its boiling point
calculate the equilibrium constant (Keq) at 298 K for the reaction below. Use F = 96,500 C/mol for Faraday's constant and R = 8.314 J/(mol K) for the gas constant. 1 Mn2+(aq) + 2 Na(s) 1 Mn(s) + 2 Na+(aq)
The volume of a mass of gas is 300ml at 25 degree celcius and 685 torr.
While drawing the stereoisomers for 1-bromo-2-chlorocyclohexane, in the Trans pair does it matter if the H (on the C with the Br) and Cl (on the C with the H) are on the wedges or else does it matter if the Br and H instead of the H and Cl, be dra..
Why does this calculation only provide an estimate of the NaOH concentration. In other words, why do we have to standardize the HaOH in this experiment to find its exact concentration
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