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Which element has an oxidation number of 7? A. Mn in MnO4- B. I in IO3- C. Fe in Fe2O3 D. Cl in ClO2
In a laboratory investigation involving a neutralization reaction, a scientist adds potassium hydroxide to nitric acid (balanced reaction following):
Use Henderson Hassalbalch equation to calculate how much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75M in sodium acetate to result in a buffer pH of 4.10? Ka = 1.8 x 10-5
Sketch bonding orbitals that result from combinations of the following orbitals on separate atoms (a) pz and dz2 (b) s and pz (c) dx2-y2 and dx2-y2
What mass of NaCl is needed to react with 35.0 mL of the same AgNO3 solution?
Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy.
Calculate the mass of carbon dioxide released when 255 g of copper carbonate [molar mass = 123.5 g/mol] is heated (assuming that the reaction goes to completion). The molar mass of CO2 is 44.0 g/mol.
A voltaic cell consists of Ni/Ni2+ and Co/Co2+ half-cells containing equal volumes of solutions with the following initial concentrations: [Ni2+] = 0.80 M; [Co2+] = 0.20 M.
What is the [H3O+] in a solution that has a pOH of 2.29? Use E notation and 3 significant figures. Is the solution 1.95X10^12? show me how you got it as well
While in Europe, if you drive 109 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 29.0 mi/gal? Assume that 1euro=1.26 dollars.
Is the wave behavior of light adequate to explain all phenomena? Give three examples of cases
The sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is?
The nitrate concentration in an industrial effluent is determined using a nitrate ion selective electrode. Standards and samples are diluted 20-fold with 0.100 K2SO4 to maintain consatnt ionic strength.
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