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(a) How many coulombs are required to plate a layer of chromium metal 0.30 mm thick on an auto bumper with a total area of 0.35 m2 from a solution containing CrO42-? The density of chromium metal is 7.20 g/cm3. (in C)(b) What current flow is required for this electroplating if the bumper is to be plated in 12.0 s? (in A)(c) If the external source has an emf of +6.0 V and the electrolytic cell is 65 percent efficient, how much electrical power is expended to electroplate the bumper? (in kWh)
1. write down a set of quantum numbers for each 3d atomic orbitals.2. how many radial nodes does each of the following
Comment on whether these are made of the same materials or not, and explain your response. The density is different in each, so they are made of different materials.
The difference in concentration must be sustained by coupling to reactions that have at least that difference of Gibbs energy
The beta blocker drug, thimolol, is expected to reduce the need for heart bypass surgery. Its composition by mass is 49.4%C, 7.64%H, 17.7%N, 15.2%O, amd 10.1% S. Determine its empirical formula
A quantity of gas under a pressure of 1.78 atm has a volume of 550 cm square. the pressure is increased 2.50atm while the pressure remains constant what is the new volume.
At 25°C the heat of fusion of aluminum is 10.6 kJ/mol and the heat of sublimation is 326.4 kJ/mol. What is the heat of vaporization of aluminum at 25°C?
what is the electronic geometry about a central atom which has the following number regions of electron density? a) Four regions of electron density b) Six region of electron density
which of the following is NOT a vitamin that is used by cells to produce a cofactor requires by alpa-ketogluterate dehydrogenase
What is the connection of Ion-Product Expression (Qsp) and the Solubility-Product Constant(Ksp)
Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: You are given 30.0 of aluminum and 35.0 of chlorine gas. Part A If you had excess chlorine, how many moles of of aluminum chloride could be produced from 30.0 ..
The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130J of heat. As it expands, it does 76kJ of work. What is the change in internal energy for the system?
The following solutions are mixed together:121.0 mL of 1.54 M AgNO3 and 45.0 mL of 1.29 M K2SO4. Calculate the molar concentration of Ag+ ions in the final solution.
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