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Copper Metal was deposited at the cathode of an electrolytic cell from a solution of Cu(NO3)2. The initial mass of the cathode was 16.4831 g and the final mass was 16.7569 g after 10.0 minutes using
A system equilibrium at 25 degrees Celsius in a 1.0L container was found to contain 0.0568 moles of BrCl, 0.0216 moles of Br2, and 0.0216 moles of Cl2. If 0.020 moles of BrCl is added to this system
If a solution is made with 0.125M magnesium nitrate, (Mg(NO3)2), and 0.100M aqueous ammonia (NH3) will a precipitate of magnesium hydroxide form Ksp= 1.1e-10 Kb= 1.8e-5
How much energy must be supplied to break a single 21Ne nucleus into separated protons and neutrons if the nucleus has a mass of 20.98846 amu. What is the nuclear binding energy for 1 {\rm mol} of {
Describe synaptic tagging and capture in LTP. What kind of stimulus is necessary for new protein synthesis to occur? What kind of stimulus is necessary for a synaptic tag
A mixture is prepared using 25.00 mL of 0.08000 M aniline, 25.00 mL of 0.06000 M sulfanilic acid and 1.00 mL of 1.230 × 10-4 M HIn and then diluting to 100.0mL, where HIn is the protonated ind
Using the Ka values, calculate the pH of a buffer that contains the given concentrations of a weak acid and its conjugate bases. [1]. 0.86 M NaH2PO4 and 0.63 M Na2HPO4 [2] 0.60 M NaHCO3 and 0.72 M N
a buffer is prepared by combining 10.0 g of NaH2PO4 with 150 mL of 0.20 M NaOH and diluting to 2.0 L. what is the pH of the buffer? (Ka (H2PO4-)= 6.2 x 10^-8)
what is the pH of an aqueous solution composed of 0.64 M NH4+ and 0.20 M NH3? (Ka of NH4+= 5.6 x 10^-10)
Provide an explanation on why the methylene unit between the two carbonyl groups is more acidic than each of the methyl groups in acetylacetone. In the reaction conditions, what is the base responsi
Would you expect Cobalt(III) Acetylacetonate to be a diamagnetic or paramagnetic compound
How much heat is produced in burning 8 mol of CH4 under standard conditions if reactants and products are brought to 298 and H2 O(l) is formed. What is the maximum amount of useful work that can be
What polypeptide would be synthesized from the following template strand of DNA:3' CGG AGA CGG ACG 5'
For the following hypothetical elementary step reaction at equilibrium: A in equilibrium with B, and from the ARrhenius equation k= A e^(-Ea/RT), derive the equation : Ln(K1/K2)= delta H/R(1/T2 - 1/
Indicate which compounds present i) in the reactants and ii) in the products from this lab experiment could be expected to give positive tests with a) permanganate and b) ceric ammonium nitrate.
Consider 3 amino acids A, B, and C. How many trimeric isomers would be formed. Show them.
It's proton NMR spectrum displays 4 signals as follows: 1.0 ppm(triplet, 3H); 2.4 ppm (quartet, 2H); 3.7 ppm(singlet, 2H); 7.2 ppm (multiplet, 5H). Identify the structure of this compound.
Write a balance equation for the reaction of nitric acid (HNO3) with each base solution : [1]. NaHCO3, [2]. MgCO3. ( Please include the phases of the substance)
If the solution contains a metal cation such as \rm Ag^+, the flow of electrons will reduce the silver ion, causing solid silver to plate onto the electrode.
A Cr^{3 + } aq solution is electrolyzed, using a current of 7.50 A}. What mass of Cr}( s) is plated out after 1.80 days? also What amperage is required to plate out 0.300 mol Cr from a Cr^{3 + } sol
What mass of calcium can be produced by this process if a current of 6200 {\rm A} is applied for 35 {\rm h}? Assume that the electrolytic cell is 69 % efficient. also What is the minimum voltage nee
During a period of discharge of a lead-acid battery, 404 g of Pb} from the anode is converted into PbSO_4 (s). What mass of PbO_2 (s) is reduced at the cathode during this same period. Also How many
During the discharge of an alkaline battery, 4.30 g of Zn are consumed at the anode of the battery. What mass of MnO_2 is reduced at the cathode during this discharge? (in g) also How many coulombs