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Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions. a) If connected as voltaic cells in series, which two metals are plated, and what is the total potential? (Al,Ag,Zn,Ni) b) If connected such that one cell acts as a battery to power the other as an electrolytic cell, which two metals are plated, and what is the total potential? (Al,Ag,Zn,Ni) c) If 3.70 g of metal is plated in the voltaic cell, how much metal is plated in the electrolytic cell?
How many grams and pounds of washing soda are needed to remove the hardness from 500 gallons of water that has a hardness of 150 ppm CaCO3?
What is the pH at the half-stoichiometric point (half-way to the endpoint) for the titration of 0.22 M HNO2(aq) with 0.10 M KOH(aq)?
an aqueous solution containing 4 mm of a weak acid ha has anabsorbance of 0.72 in a cuvet having an optical pathlength
1.If 2.47 g of salicylic acid is reacted with 61 mL methanol, what is the maximum mass of product (oil of wintergreen) that could be formed?
How many moles of each are present in the eq mixture b)Calculate the equilibrium constant
Question- If 2.00 grame of HEPES and 2.70 grams of HEPES-H+ are mixed and diluted to a final volume of 1.00L, what is the pH of the resulting buffer
Your essay should include the properties of amino acids in aqueous solutions and a method of separation for a mixture of amino acids, as well as the constitution of polypeptides and proteins and their hydrolysis
Calcium carbonate reacts with hydrochloric acid to forma a salt, carbon dioxide and water. Write the balanced equation and determine how many grams of salt will be produced of 50g of calcium carbonate was used?
Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed? C3H8 + 5 O2 → 3 CO2 + 4 H2O
An inexpensive hygrometer often used by cello players in Minnesota is based upon the color changes of cobalt(II)chloride as the relative humidity of the atmosphere changes.
how much energy in j is required to excite a hydrogen atom from its ground state to its first excited state? what is
what volume will 500 mL of gas at 20 C and a pressure of 420 mm Hg occupy if the temperature is reduced to -80 C and the pressure increased to 650mm Hg
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