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Consider the following unbalanced redox reaction:
Cr2O7 2-(aq) + Cu(s) --------> Cr3+(aq) + Cu2+
Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g Cu
Would the mass of the precipate collected be more, unchanged, or less if the residue was washed with hot distilled, deionized water instead
Determine how much heat is released when 14.8 kilo grams of Ethylene forms and The Hydrogen gas is collected over H2O(water) at a temperature of twenty five degree celsius and a total pressure =762 mmHg. (The ideal gas law constant R = 0.0821L*atm/..
what is qvib at a temperature of 3100 K, keeping the zero point energy and referenced to v= 0? What is the vibrational contribution to CV, at the temperature 2600 K?
Diethyl ether is a volatile organic compound. The vapor pressure of diethyl ether is 401 mm Hg at 18°C and the Hvap = 26.0 kJ/mol. Calculate the vapor pressure of diethyl ether at 40°C.
an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.
26.0cm of a solution containinh 1.86g of X2CO3 in 250 reacted completely with 27.0cm of solution contain 3.65g of HCL per dm,calculate the molar mass of X2CO3 and relative atomic mass of X, and identify X.
Calculate the initial effusion rate. If this rate continued how much time would pass until the pressure dropped to 0.90 bar? (actually the rate changes with pressure- indicated why using the equations). assume values for nitrogen
which is to say that potassium iodide is added to the sodium chloride as a nutrient. When a 4.2962 g sample of table salt was analyzed by precipitating the halides with silver nitrate, 10.4192 g of a miture of AgCl and AgI resulted.
In trans-1,2-dibenzoylethylene, even though the conjugated C=O group frequency coincides directly with the expected C=C stretching fequency, we would not have expected to observe the late stretching mode in the infrared spectum. Why?
Write out a detailed mechanism for the formation of dibenzalacetone, using acetone + benzaldehyde in NaOH.
A redox reaction is found to be spontaneous at standard conditions. Which set of thermodynamics properties is true for this reaction?
Compute the number of electrons in a flake of pure gold valued at $0.5. Assume that the price of gold is $1426.0/troy oz.
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