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The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell? (c) What is the value of the equilibrium constant for the reaction occurring in this cell?
An ideal gas mixture of 1.00g N2 and 3.0g He is placed in a 1.00L container at 30 °C. What is the partial pressure of He
Helium gas at 104.0 kPa and 372.0 K is located within a cylinder with a piston. Initially the gas occupies 0.3000 m3. While a constant force, F, is applied to the end of the piston so that the pressure inside the cylinder is held constant at 104.0..
Calculate the number of moles of sodium bicarbonate orginally present in the unknown mixture, knowing that 20.0ml of 0.100M HCL were used in the step 2 of titration, using methyl orange as an indicator.
By definition, which of the following can be broken down into simpler substances?
what effect does increasing the temperature have on equilibrium? what effect does adding a catalyst have on equilibrium?
Write the balanced molecular, ionic and net ionic equations for the reaction between magnesium and cobalt(II) sulfate. (b) What is oxidized and what is reduced in the reaction?
Describe how a linear sequence of amino acids gives rise to the three-dimensional structure of proteins. Detail the significance of this structure, how it may be modified, and the results of such modification
The dry ice is allowed to sublime and the mixture is allowed to return to 25.0 degrees Celsius. what is the total pressure in the flask?
A gas stream that contains 1.50 mole% CO2 flows through a pipeline. 20.0 kg/min of CO2 is injected into the line. A sample of the gas is drawn from a point in the line 10 meters downstream of the injection point and found to contain 2.3 mole% CO2.
a 425 ml volume of hydrogen chloride gas, hcl is collected at 25 degree Celsius and 270 torr. what volume will it occupy at stp?
Determine the number of signals expected in the carbon 13 spectra for each of the following compounds. propyl benzene and 1,2,4 trimethyl benzene
the two complimentary single strands of DNA shown below can form (at least) three secondary structures upon annealing. Name three of them.
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