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Consider 2.50 L of a buffer solution made from NaOH and 3.50 M H3PO4 at pH 2.22 that has a total concentration of phosphate containing species of 0.177 M.
How many mL of 2.00 M HCl must be added to the buffer solution to change its pH by 1.25 units?
Explain what is methylphenidates purpose and its chemical structure? Also determine how does it affect the body of human beings ,what makes up that compound , what organs do it impact?
Compare and contrast conventional current regulations and oversights that exist in the United States with that of nonconventional medicine.
1. What is the oxidation number of Sulfur in the ionic compound K2SO4? Explain.
degree C and 600. torr contains 50% helium and 50% xenon by mass. what are the partical pressures of individual gases?
What are the values of [H+], [H2PO3-], and [HPO32-] in a 3.0 M solution of H3PO3? What is the pH of the solution?
7.2 liters of an ideal gas are contained at 4.0 atm and 27 °C. Using the ideal gas law, calculate how many moles of this gas are present.
1. Consider the following: Hydrogen gas and oxygen gas react violently to form in water. Draw the Lewis structure for hydrogen gas, oxygen gas, and water. State whether each molecule is polar or nonpolar (according to VSEPR theory) and why.
Important information about Quant problems, Calculate pFe2+ at Ve in the titration of 25.00 mL of 0.02026 M EDTA by 0.03855 M Fe2+ at pH
What effect would placing a charged group in the interior of a protein have on its conformational stability
If 9.57 moles of an ideal gas has a pressure of 2.81 atm, and a volume of 25.49 L, what is the temperature of the sample in degrees of Celsius
If the ka for the acid phenol (call it HP) is 1.3 x 10-10, what is the pka of the phenolate ion (P-)
Briefly explain why you can make the assumption that all of the SCN- ion in solutions S2-S6 has been converted to FeNCS^2+ ion.
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