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A solution contains 1 x 10-3 M Fe2+ and 2 x 10-10 M Fe3+. As the pH of the solution is raised, which iron hydroxide will precipitate first (i.e., ferrous hydroxide, Fe(OH)2(s) or ferric hydroxide, Fe(OH)3(s)). At what pH will this occur? Ignore complex formation and potential redox reactions.
What is the empirical formula of lysine? If the approximate MM of lysine is 150 g/mol, what is the molecular formula?
The atomic weight of a newly discovered element is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu.
What is the molarity of 2500. mL of a solution that contains 160. grams of NH4NO3?
How would the following experimental errors change the calculation of the number of mg of ascorbic acid in fresh orange juice a) student neglected to filter the juice
How would you synthesize Acetophenone starting from an Alkene? Identify and draw the structure of the starting compound
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 490?
The minerals chalcocite (Cu2S) and malachite (Cu2CO3(OH)2) are two primary sources of copper. What is the oxidation state of copper in each of these minerals?
the temperature inside a pressure cooker is 111°C. Calculate the vapor pressure of water inside the pressure cooker.
A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is
An airplane is pressurized to 650 mm,Hg}, which is the atmospheric pressure at a ski resort at 1.30×104 ft altitude. If air is 21 % oxygen, what is the partial pressure of oxygen on the plane?
when NaOH is added to this solution, a white precipitate forms. Using an equation, provide the identity of the white precipitate and explain its formation.
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