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When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox) reaction to occur. If the solution contains a metal cation such as \rm Ag^+, the flow of electrons will reduce the silver ion, causing solid silver to plate onto the electrode. The amount of metal plated depends on the number of electrons passed.
The total charge of a mole of electrons is 96,500 coulombs (\rm C) and
1 ampere (A) = 1 coulomb/second\; (C/s)
What mass of Cu{(s)} is electroplated by running 13.5 A of current through a {Cu}^{2+}{(aq)} solution for 4.00 \rm h?
How many minutes will it take to electroplate 36.1 g of gold by running 5.00 \rm A of current through a solution of {Au}^{+(aq)}?
A rectangular block has dimensions 2.9 cm 4.0 cm 10.0 cm. The mass of the block is 625.0 g. What is the volume of the block?
what hybrid orbitals are used about the central atom of each of the angles.
Green light of a wavelength 516 nm is absorbed by an atomic gas. What is the energy difference between the two quantum states involved in the transition.
Select each side of the mass balance equation for an Fe3(PO4)2 solution where the existing species are Fe2
What is the estimated quantity of energy released in the combustion of methanol?
A 24.9 mL volume of HCl reacts completely with 55.0 mL of aqueous Na2CO3. The reaction is as follows: 2HCl (aq)+ Na2CO3(aq) ->CO2(g)+H2O(l)+2NaCl(aq) The volume of CO2 formed is 141 mL at 27°C and 742 mmHg.
a.) Available Electrons (AE) b.) Needed Electrons (NE) c.) Geometry Description d.) Number of sigma bonds e.) bonding description f.) lewis dot structure
Solve Virial equation (the virial equation expanded in 1/ Vm )are expansions in p and 1/Vm,respectively
Use metric conversion factors to solve the following problem. A park has an area of 150000 m^2. What is the area in km^2?
What pressure is exerted by 0.625-mole of a gas in a 45.4-L container at -24.0°C?
An unknown element, X, reacts with chlorine to form a compound with the formula XCl2. Which element is most likely to be element X?
calculate the activation energy for a reaction if its rate constant increases from 10 to 45 s as the temperature increases from 298 to 315 k .
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