A current of 1000. A flows for exactly 1 hour in order to reduce Mg2+ to Mg metal. The mass, in grams, of metallic Mg produced is [A].
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A current of 1000. A flows for exactly 1 hour in order to reduce Mg2+ to...
A current of 1000. A flows for exactly 1 hour, through a cell in which the following reaction occurs at one of the electrodes. Mg2+ + 2e- → Mg a) Calculate the charge, in coulombs, which passes through the circuit in this time. b) Calculate the theoretical mass of Mg (magnesium metal) which is produced in this time.
3. A steady electric current is passed through molten MgCl, for exactly 1.00 hour, producing 243 grams of Mg metal. If the same current is passed through molten AICI, for 1.00 hour, what is the mass of Al metal produced?
what mass of silver (Ag) metal can be produced in 1 hour in the electrolysis of Ag+ salt by a current of 12 A?
1.Rank the following elements in order of decreasing metallic character (from most metallic to least metallic): Mg, C, K, Be, N 2. A neutral atom has the following characteristics: - it has 7 valence electrons - it's a transition metal - the highest quantum level occupied is n = 4 What is the identity of this atom? Enter either the element name or symbol (case insensitive).
2. Faraday's Experiment. Because of some AV, a current of 1 amp flows through a silver solution, and after a minute, 0.06709 grams of silver are deposited on the electrodes. a. How many electrons flow in one minute? b. From this experiment, what's the mass of a Ag atom in grams? c. Determine the molar mass of Ag (i.e. g/mole)
11. A current of 25 A runs for 1 hour. How many grams of Al can be converted from Al3+ to Al by this current?
MKM International is seeking to purchase a new CNC machine in order to reduce costs. Two alternative machines are in consideration Machine 1 costs $500,000 but yields a 10 percent savings (net benefit) over the current machine used. Machine 2 costs $900,000 but yields a 20 percent savings (net benefit) over the current machine used. In order to meet demand, the following forecasted cost information for the current machine is also provided. Year 1 2 3 4 5 Projected Cost...
MKM International is seeking to purchase a new CNC machine in order to reduce costs. Two alternative machines are in consideration Machine 1 costs $500,000 but yields a 10 percent savings (net benefit) over the current machine used. Machine 2 costs $900,000 but yields a 20 percent savings (net benefit) over the current machine used. In order to meet demand, the following forecasted cost information for the current machine is also provided. Year 1 2 3 4 5 Projected Cost...
etermining a Chemical Formula Submit for Grading Current score: 1/4 pts Sample A 4.287 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 11.09 grams of CO2 and 2.270 grams of H20 are produced In a separate experiment, the molar mass is found to be 136.2 g/mol. Determine the empirical formula and the molecular formula of the organic compound. Enter the elements in the order C, H, O empirical formula - molecular...
Faraday’s Law 1. Hydrogen fuel cells are based on the reaction of hydrogen and oxygen to form water: 2H 2 (g) + O 2 (g) ? 2H 2O (l) In the presence of excess oxygen, a hydrogen fuel cell consumes 0.370 grams of hydrogen per hour at 25°C. Calculate the maximum current that can be produced by this fuel cell. 2. Aluminum is produced by the electrolytic reduction of alumina, Al 2O 3. The overall cell reaction can be written...