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consider the reaction H2S+I2>2HI with equilibruim K= 0.81 . if an initial concentration 1.0 M of each component is placed in close container, what will be the concentration of H2S at equilibruim?
If 0.628 moles of a substance weighs 77.3 g, what is the molar mass of the substance, in units of g/mol?
How many grams of sodium are needed to produce 33.3 L of hydrogen gas according to the following reaction at 25oC and 1 atm. sodium (s) + water (l) -------sodium hydroxide (aq) + hydrogen (g)
The following reaction is second order in (A) and the rate constant is 0.039 M-1 s-1. The concentration of A was 0.30 M at 23 s. The initial concentration of A was
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy released by the formation of water from H2 and O2 into electrical energy. Determine the quantity of electrical energy obtained from converting 1 mole of H2 into H..
The final partial pressure of NOBr was 2.5 atm after the following equilibrium was established: 2NOBr(g) 2NO(g) + Br2(g). What is the value of Kp
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
What is the pH of Na3PO4. While this is a triprotic species, you may ignore two of the Ka's and concentrate on the single Ka that is appropriate for this problem.
The water warms and the copper cools until the final temperature is 35.2 degrees C. Calculate the specific heat of the metal and identify the metal.
how many grams of oxygen are collected in a reaction where 231 ml of oxygen gas is collected over water at a
when a particular marble is dropped into a beaker of water it sinks to the bottom. which is the best explanation? a.
For a particular redox reaction Cr is oxidized to CrO42- and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in basic solution.
How much 0.20mol/L NaOH must be added to this buffer to raise the pH to 5.1. If the same amount of 0.20 mol/L NaOH were added to 250mL of deionized water, what would the new pH be
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