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500.0 mL of 0.170M NaOH is added to 585 mL of 0.200 M weak acid (Ka=2.66*10^-5) what is the pH of the resulting buffer? HA(aq) + OH(aq) ---> H20(l) + A^- (aq)
A noble gas with a mass of 13.1 g occupies a 2.5 L container at a pressure of 3.2 atm at 298 K. What is the identity of the noble gas
What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an 869-milliliter solution?
Draw the structure of the product that results from the reaction of excess hydrogen gas in the presence of a nickel catalyst:
how many milliliters of 0.54M HCL solution are needed to react completely with 4.6g of zinc to form zinc (II) chloride?
Determine the amount of heat (in kJ) given off when 1.89 104 g of ammonia are produced according to the following equation. Assume that the reaction takes place under standard-state conditions at 25.0°C.
RbNO3 Express your answers as ions separated by a comma. If the compound is not soluble, enter noreaction
we have a compound that is determined to contain 4.36 grams of nbspphosphorus and 5.64 grams of oxygen and a molar mass
explain how le chateliers principle affects the extent of the dissociation of acetic acid in a buffer that is 0.10 m
What is the pH of the solution halfway to the equivalence point. What is the pH of the solution at the equivalence point
A 2.0 L-reaction flask initially contains 0.17 mol CO, 0.15 mol H2, and 0.10 mol CH3OH (methanol). If this mixture is brought in contact with a zinc oxide-chromium(III) oxide catalyst, the equilibrium shown below is attained.
The density of a gaseous element at 310oC and 1.02 atm is 2.64 g/L. What is the molecular weight of the element
Titrated three different samples of KHP and determined that the sodium hydroxide molarity was 0.1234 M, 0.1244 M, and 0.1199 M, respectively. Calculate the sample mean and the sample slandered deviation?
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