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A buffer solution with a pH reading a 8.50 was prepared by mixing 0.25 mole acid (HA) and 0.05 mile NaOH in 500.0mL DI water. How much more gram of NaOH you should add to this solution in order to have the highest buffer capacity of this solution?
The rate of a chemical reaction can sometimes be determined by measuring the change in mass of the reaction flask and its contents with time
write a balance chemical equation for the combustion of 1 mol glycerin, and calculate delta H for this reaction at 298K if burning 1 mol glycerin has a delta E of -54.6 kj
Methyl alcohol (CH3OH) has a density of 0.793 kg/L. What volume of it is needed to add to water to make 5 liters of 0.250 M solution?
What is the pH of concentrated sodium hydroxide? NaOH FW=40.0 g/mol
Calculate the potential of the cell be if the mass of the Iron (Fe) electrode (MW = 55.85 g/mol) is 62.0 g?
A container is filled with C2H6O until its concentration reaches 1.375 mol. How many minutes will it take for 71.5 percent of the C2H6O break down?
what is the % mass of acetic acid in the vinegar? Hint: What is the mass percent of aceditc acid titrated and what is the definition of % mass?
Why is The dehydration of cyclohexanol to cyclohexene a traditional experiment to illustrate the acid-catalyzed dehydration of an alcohol to an alkene ?
The following density measurements were made on a bar of iron: 7.58 g/mL, 8.02 g/mL, 7.83 g/mL, 7.80 g/mL, and 7.66 g/mL. The accepted value for iron's density is 7.85 g/ML. Find:
Determine how long will it take for a sample of N2O5 to decay to sixty percent of its initial value?
Find the concentration of Pb2 in 0.0010 M KI saturated with PbI2. Include activity coefficients in your solubility-product expression. The Ksp of PbI2 is 9.8× 10-9. Hint from sapling below: Including activity coefficients, the solubility-product e..
In a manometer the mercury level at the open end of the tube is 215 mm higher than at the closed end of the tube. If the atmospheric pressure is 1 atm.
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