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If 32.78 mL of NaOH solution is required to neutralize 20.00 mL 0f 0.2500 M of oxalic acid, H2C2O4(aq), what is the concentration of the NaOH solution? The balanced equation is: 2 NaOH(aq) + H2C2O4(aq) ? Na2C2O4(aq) + 2 H2O(l)
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
A patient's thyrod gland is to be exposed to an average of 5.5 microcuries for 16 days as an ingested sample of iodine-131 decays. If the energy of the beta radiation is 9.7 x 10-14 J and the mass of the thyroid is 32.0 g, what is the dose receive..
If the mass of the Co(NO3)2*6H20 obtained to prepare the stock solution had been more than the mass that you recorded would the concentration of the unknowns have been too high
Consider the Lewis Resonance structure for the chlorite ion. How many total structures can be drawn, and how many of those structures obey the octet rule?
You have a 1 L. container of a gas O2 at 20 degrees celcius and 1 atm. subtracting the weight of the container, what is the mass of the gas?
What are the mole fraction and the mass percent of a solution made by dissolving 0.35 g KBr in 0.405 L water
A 75.0 mL volume of 0.200 M NH3 (Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 13.0 mL of HNO3.
Describe the preparation of 125 mL of 5.30 M HNO3 from a concentrated solution that has a specific gravity 1.42 and is 70% (w/w) HNO3.
explain why the chemical formulas AlCl3, PCl3 and CoCl3 are so similar, yet their names are so different.
molecular equation, complete ionic equation, and net ionic equation for: Sodium carbonate + sulfuric acid Cadmium chloride + sodium hydroxide Hydrochloric acid + sodium hydroxide Ammonium chloride + sodium hydroxide Sodium acetate + sodium hydroxi..
For a first-order reaction. at 750 K, 15% of a sample of cyclopropane changes to propene in 6.8 minutes. what is the half-life of cyclopropane at 760 K?
given the pk for acetic acid is 4.76. suppose that we dissolve a mole of this weak acid in 10l of water. find the ph of
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