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The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is added to the solution. Give your answer accurate to two signficant figures. Enter 1.23x10-10 as 1.23e-10. Give your answer in mol/L Molar masses (in g/mol) N, 14.01 O, 16.00 Cu, 63.55 Hint: Assume that Cu2++4NH3 --> Cu(NH3)42+ is the only important reaction. Notice that the equilibrium constant for this reaction is very large. One way to approach the problem is to imagine the reaction proceeds to equilibrium by first going 100% to completion and then backing up a little.
An ocean diver experiences a light intensity (origination from the sun) of 452.6 W/m2 at a depth of 6.15 meters from the surface of the ocean. At a depth of 25.6 meters, the light intensity is 336.5 W/m2. What light intensity, in W/m2, will the di..
Write a balanced chemical equation for the reaction of 4-Nitrobenzaldehyde and sodium borohydride (NaBH4). If 0.21 g of 4-nitrobenzaldehyde dissolved in 10 mL of methanol is mixed with 0.14 g of sodium borohydride, what is the theoretical yield?
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of Cr(OH)3(s) will be: Cr(OH)3(s) + Cl2O7(aq) --> CrO42-(aq) + ClO2-(aq)
A sample of sodium reacts completely with 0.568kg of chlorine, forming 936g of sodium chloride. What mass of sodium reacted.
What molarity of aqueous calcium chloride solution can be expected to show the same conductivity as 0.0050 M aluminum sulfate at 12,500 units.
As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chip products for the packaging label.
what is the solubility of O2 at an elevation of 12,000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25°C, and that the mole fraction of O2 in air is 0.209 at both 12,000 ft and at sea level.
What is the internal energy change for the system if 969 joules of heat flows into the system from the surroundings and 253 joules of work is done by the system on the surroundings
caclculate the number of grams of Fe formed when 0.300kg of Fe2O3 reacts.
Calculate the vapor pressure of a solution of 20 g of benzene (C6H6) and 20 g of toluene (C7H8) at 90 oC. Is the boiling point of this mixture higher or lower than 90 oC at an atmospheric
A rare gold coin (24 karat, or 100% gold) has a mass of 25.54 g. How many atoms of gold are present in this coin
Calculate the mass of nitrogen dissolved at room temperature in an 76.0L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78
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