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A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCl(s) + e- ---> Ag(s) + Cl-(aq). The two half-cells have [Cl-] = 0.0150 M and [Cl-] = 2.55 M, respectively. (a) which electrode is the cathode of the cell? (b) what is the standard emf of the cell? (c)what is the cell emf for the concentration given? (d) For each electrode, predict whether [Cl-] will increase, decrease, or stay the same as the cell operates.
Which of the following sets of the four quantum numbers n, 1, ml, and ms describes one of the outermost electrons in a ground-state radium atom
Plot boiling point (BP) (y-axis) versus molecular weight (MW) (x-axis) for the first four compounds listed in the table below. Why Water and Ethanol are not on a straight line like the other substances
Carbon-14 is a radioactive nucleus with a half-life of 5760 years. Living matter exchanges carbon with its surrounding (for example, through CO2) so that a constant level of 14C is maintained, corresponding to 15.3 decay events per minute
determine the density of an unknown liquid if the exact mass of 10.00 ml of this unknown at 25 0c is equal to 8.2148 g.
Calculate the quantity of sodium fluoride in kilograms needed per year for a city of 50,000 people if there daily consumption of water per person is 170 gallons. (Sodium fluoride is 45.0 percent fluorine by Mass. 1 gallon=3.79 liters, density of w..
At a winery, glucose (C6H12O6) in grapes undergoes fermentation to produce ethanol (C2H6O) and carbon dioxide. C6H12O6 ---> 2C2H6O + 2CO2A: How many moles of glucose are required to form 128g of ethanol?
a solution is prepared by dissolving 197 g sucrose c12h22o11 in enough water to produce 1.20 l solution. what is the
An unknown monoprotic weak acid, HA, has a molar mass of 55.0. A solution contains 2.50 g of HA dissolved 800. mL of solution. The solution has a pH of 2.000. What is the value of Ka for HA
Draw complete Lewis structure for following condensed structural formula. (CH3CH2)CO
Write a Lewis structure for each of the following ions. Assign formal charges to all atoms. If necessary, expand the octet on the central atom to lower formal charge. Draw the molecule by placing atoms on the grid and connecting them with bonds. I..
Pick any two normalized eigenfunctions of the particle in the box Hamiltonian. Show by direct integration that these functions are orthogonal functions.
A solid object is made of two materials, one material having density of 2.4 g /cm3 and the other having density of 8.6 g/cm3. If the object contains un-equal masses of the materials (75/25), what is its average density
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