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Problem- In 2011, researchers showed that hypochlorous acid (HClO) generated by white blood cells kills bacteria. Calculate (Ka)=2.9X10^-8 the percent dissociation of :( A). 0.40 M HClO, (B) 0.035 M HClO
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The "Zebra" cell was invented in 1985 in South Africa as part of the "ZEolite Battery Research Africa" project, and is used in all-electric municipal buses and other vehicles.
A sample of naphthalene,which should be pure white, was found to have a grayish color after the usual purification procedure. The melting point was correct and the melting point range small. Explain the gray color.
A 1.45 g sample of an iron ore is dissolved in acid and the iron obtained is (aq). To titrate the solution, 21.6 mL of 0.102 M KMnO4(aq) is required. What is the percent of iron in the ore? Hint: calculate moles of iron then mass of iron then % ir..
Calculate the enthalpy change for the reaction in kJ/mol HCL. For this problem, assume that the calorimeter loses only a negligible quantity of heat, the total volume of the solution is 100 ml, the density of the solution is 1.0 g/ml, and its spec..
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, in a flask with V = 140.612 mL at 23.5?C. Calculate the initial and final pressure (atm).
A parenteral solution is a solution that is injected into the tissues or bloodstream, but not given orally. Why are isotonic solutions used as parenteral solution
An average reaction rate is calculated as the change in the concentration of reactants or products over a period of time in the course of the reaction. An instantaneous reaction rate is the rate at a particular moment in the reaction and is usuall..
Suppose that 0.2553 moles of KMnO4 were required to exactly titrate the Fe2+ in a sample. How many moles of Fe2+ were in the sample?
a few compounds exist whose solubility decreases as the temperature increases. how would the values for deltag deltah
for which Kp=2.00 at 20 C. A mixture of NO(g) at a partial pressure of 1.50 atm and NO2(g) at a partial pressure of 0.50 atm is allowed to come to equilibrium in a sealed container maintained at 20 C.
oxygen makes up 46.7 by mass of the earths crust. how many grams of oxygen are present if a sample of the crust has a
the molecule 2,2-dimethylheptane, draw Newman projections of the most and least stable forms of 2,2-dimethylheptane, viewing doen the C3-C4 bond, label th energy vs conformation angle diagram
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