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The standard cell potential for the following galvanic cell is 0.92V. Al(s) Al3+(aq) Cr3+(aq) Cr(s). Calculate the standard reduction potential for Cr3+/ Cr Cr half cell.
In the purification process, the organic layer is washed sequentially with 2 M NaOH, water, and saturated aqueous sodium chloride. What is the purpose of each of these washes and why is cold 2 M NaOH recommended?
a sample of hfrac12o with a mass of 46.0 grams has a temperature of -58.0 agravec. how many joules of energy are
a chemistdissolves0.099g of cuso4 middot 5 h2o in water and dilutes the solution to the mark in a 500-ml volumetric
a solution is 0.010 m in both br- and so42-. a 0.250 m solution of leadii nitrate pbno32 is slowly added to it. a which
waters relatively high specific heat 4.184 jgdegc makes it an ideal coolant for automobile engines. how much heat from
An experiment requires 44.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
The acid ionization constant of Fe(H2O)62+(aq) is 3E-6. Compute the pH of a 0.2 M aqueous solution of Fe(NO3)2. 5. Compute the solubility of Mg(OH)2 in a buffer solution at pH=10.31. The solubility product of magnesium hydroxide is 1.2E-11
A sample of an unknowk gas effuses in 11.6 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. what is the molar mass of the unkown gas
How many grams of chromium metal can be formed if a 0.500 amp current is passed through a solution of Cr3+ for a period of 45.0
first generation computers were powered by nickel cadium batteries which generated 1.20 V based on the following reaction Cd(s)+2 NiO(OH)(s)+2 H2O(l)-> Cd(OH)(s)+2 Ni(OH)2(s)
Dichloromethane has a specific gravity of 1.33: a) What is the mass (kg) of 75 liters? b) What is the volumetric flow rate (L/min) of the dichloromethane entering a storage tank if the mass flow rate is 960 kg/min.
calculate the formal concentration of a sodium acetate solution prepared by diluting 45.0 ml of a solution containing
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