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A 10.0 g piece of metal at 100 degrees C is transferred to a calorimeter containing 50.0mL of water initially at 23.0 degrees C. Compute the specific heat capacity of the metal if the heat capacity of the calorimeter, C cal is 25.0 J/K. The final temperature, T final, is 25.6 degrees C
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure. ClO4 -
The weight of your 1285-kg car is supported equally by its four tires, each inflated to a gauge pressure of 36.0 lb/in2. What is the area of contact each tire makes with the road?
Use a Slater determinant to write down a wave function for the boron atom that has the proper symmetry with respect to electron exchange. What is the value of the normalization constant for the Slater determinant if the individual atomic orbitals ..
albr3 is sold as a solution in ch2br2. this is a rather exotic solvent and somewhat difficult to work with as well
The sample required 42.8 mL of 0.0175 M permanganate to reach the end point. What is the concentration of hydrogen peroxide in the original sample
If the activation energy for the decomposition of a compound is 99.1 Kj/mol, at what temperature will the rate be 10 percent greater than its rate at 25C
In this experiment you are adding naphthalene to cyclohexane and using the freezing point depression to determine its molecular weight. What would happen to the measured freezing point depression if you add an equal mass of Acenaphthene
A sample of gas occupies 175ml at 10C and 750torr. What volume will the gas have at 25C and 790 torr?
Calculate the degree of dissociation by A) assuming ideal behavior and B) using a mean activity coefficient y=0.93. The concentration of the acid is 0.010 M.
a chemist burns 160 g of aluminum in oxygen to produce aluminum oxide. she produces 260 g of aluminum oxide. write a
Chromatography in the presence of 6 M guanidine hydrochloride yields only a peak for a protein of Mr 60,000. Chromatography in the presence of 6 M guanidine hydrochloride and 10mM 2-mercaptoethanol yields peaks of Mr 34000 and 26000
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag^+ and NH3 in which most of the silver ions are present as the complex Ag(NH3)2^+ and the concentration of Ag^+(aq) i..
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