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2 NO(g) + Br2(g) reverse reaction arrow 2 NOBr(g)
What would be the partial pressures of all the species if NO and Br2, both at an initial pressure of 0.30 atm, were allowed to come to equilibrium at this temperature?
The Cd2 was displaced from EDTA by the addition of an excess of CN-. Titration of the newly freed EDTA required 25.5 mL of 0.0250 M Ca2 . What were the molarities of Cd2 and Mn2 in the original solution
A 0.54 M solution of a compound in water has a density of 1.340 g/mL at 20°C. What is the molality of this solution. Assume that the mass of the solution is the mass of the solvent
After 79.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
Two acid-base reactions are given below. Of the three reaction arrows presented in each reaction, select the arrow (via the multiple choice circle before it) that best indicates the acid-base equilibrium position
What are some factors to help you determine the relative strength of a base. For example, how would you know that NH2- is a very strong base. Or that OH- is a weaker base than NH2- And that CN- is a relatively weak base
A student recrystillized 500 mg of an impure sample of naphthalene using methanol-water solvent pair and obtained 150 mg dried crystillized product
A voltaic cell is constructed from an Ni^2+(aq)-Ni(s) half-cell and an Ag^+(aq)-Ag(s) half-cell. The initial concentration of Ni^2+(aq) in the Ni^2+-Ni half cell is [Ni^2+] = 1.1*10^-2M.
a gasous mixture of oxygen and nitrogen contains 32.8% nitrogen by mass. what is the partial pressure of oxygen in the mixture if the total pressure is 405mmHG?
the specific heat of the dilute nacl solution formed during the neutralization of the hcl is about 2 less than the
If B gas at 0.221 bar is injected into a container at 665 °C that contains excess A, what are the partial pressures of all gases present at equilibrium?
Suppose we doubled the volume of the solution (by adding more solvent) while keeping the quantities of the reactants constant in a SN1 reaction.
What is the mole ratio of benzene to n-octane in the vapor above a solution of 20.0% benzene and 80% n-octane by mass at 25C? The vapor pressures of n-octane and benzene at 25 c are 11 torr and 95 torr, respectively
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