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The following species, which is the best oxidizing agent and which is the best reducing agent?a) A b) A^2+ c) A^4+ d) B e) B^2- f) B^2+
A 5 kg aluminum block sits in your lab, which is at 21 C. You wish to increase the temperature of the block to 50 C. How much heat in [J] must be supplied
What is the molarity of a solution made by dissolving .34 moles of NaCl in 455 mL of water?
Use simple structure and bonding models to account for why phosphorus forms 2 chlorides (PCl3 and PCl5) while nitrogen forms only 1 chloride (NCl3).
How much heat is required to convert 32 g of ethanol at 27 degrees C to the vapor phase at 78 degrees C?
What is the final volume of a 500.0 mL gas container that increased in temperature from 299 K to 333 K while the pressure increased from 1.00 atm to 1.54 atm
Calculate the molarity and the molality of an NH solution made up of 28.0 g of NH in 70.0 g of water. The density of the solution is 0.982 g.
Calculate the density and radius of the ball bearing (volume of a sphere of radius r is 4/3pi r^3).
17the decomposition of dinitrogen pentaoxide has an activation energy of 102 kj/mol and delta H =+55 kj/mil. What is the activation energy for the reverse reaction
What mass of this substance must evaporate in order to freeze 250 of water initially at 25? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
An ideal gas enters a valve at 500K and 3MPa at a steady state rate of 3 mol/min it is throttled to 0.5 MPa. What is the rate of entropy genration. Is the process reversible.
Calculate the diffusion limiting current for the oxidation of an organic compound at an electrode in stagnant solution. Assume 6 electrons are involved in the reaction (n=6). C(org) = 0.01 M, D(org) = 2x10^-5 cm^2/s.
Synthesis of Nylon: Relative Reactivities of Acid Chloride, Acid Chlorides are known to be reactive towards water, however successful polymer preparation can be made with 5% aqueous
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