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For the setup in the above question, what is the value of Q, the reaction quotient, for this cell reaction at 25oC? 2Cr(s) + 3Br2(aq) --> 6Br-(aq) + 2Cr3+(aq)
The solubility of silver carbonate is 33.5 mg/L. What is it molar solubility and what is its Ksp?
What mass of this substance must evaporate in order to freeze 170 of water initially at 23? (The heat of fusion of water is 334 the specific heat of water is 4.18 .
If a molecule containing only oxygen and nitrogen is 36.8% Nitrogen by mass, what is the emperical formula
Write the cell notation for a voltaic cell with the following half-reactions.
a cylindrical glass tube 15cm in length is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g. Calculate the inner diameter of the tube in centimeters. The density of ethanol is 0.789 g/mL
A piece of silver metal weighing 194.3 g is placed in a graduated cylinder containing 242.0 mL of water. The volume of water is displaced and now reads 260.5 mL. Calculate the density of sliver in g/cm3.
A solution is prepared by mixing 500. mL of 0.10 M NaOCl and 500. mL of 0.20 M HOCl. What is the pH of this solution? [Ka(HOCl) = 3.2 ? 10-8]
Equilibrium constant from standard potential data, Calculate the equilibrium constants of the following reactions at 25°C from standard potential data
The concept of free energy allows prediction of spontaneity of a process by considering the changes in ________ and ________ during the process.
Calculate the amount of heat (cal) necessary to convert 34g of ice at -3oC into liquid water at 25oC.
When most Fe^3+ salts are dissolved in dilute nitric acid, the solution is often yellow to orange-yellow in color. Why could you not visually detect these colors in Fe(NO3)3 stock solution
Two weak acids, HA (pKa=3.0) and HB (pKa=5.0) have equal partition coefficients for extraction from water to n-octanol. an aqueous solution with equal concentrations of HA and HB is extracted with n-octanol
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