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The pH of 0.10 M pyridine(aq) is 9.13. What is the value of Kb for pyridine?
1. Define instantaneous monitoring, integrated monitoring, personal monitoring, and area monitoring, and explain the differences among each one. Provide a scenario in which in each method would be used.
A certain metal oxide has the formula MO where M denotes the metal. A 36.46g sample of the compound is strongly heated in an atmosphere of hydrogen to remove oxygen as water molecules.
Naturally occurring Mg exists as isotopes 24-Mg, 25-Mg, and 26-Mg. Given the information in the following table, determine the mass of 24-Mg, the most abundant natural isotope.
How much heat is evolved when 233 g of ammonia gas condenses to a liquid at its boiling point?
A solution is prepared by mixing 0.12 L of 0.14 M sodium chloride with 0.25 L of a 0.19 M MgCl2 solution. What volume of a 0.20 M silver nitrate solution is required to precipitate all the Cl- ion in the solution as AgCl
Problem- You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.220 M sodium benzoate. How much of each solution should be mixed to prepare this buffer
What one reagent should re-energize the light solution after it has faded? Explain using moles and limiting reagents.
Ethanol (CH3Ch2OH) the intoxicant in alcoholic beverages, is also used to make other organic compounds. In concentrated sulfuric acid, ethanol forms diethyl ether and water.
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed to prepare 1.7 L of a solution that is 97 ppm in KNO3?
at 400 k the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kpa was 9.71 pas when 10.0
The following five beakers, each containing a solution of sodium chloride (rm NaCl, also known as table salt), were found on a lab shelf:
Calculate the volume of CO2 produced at 37 degrees celsius and a 1.00 bar when 1.00 gram of glucose is metabolized.
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