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You need to produce a buffer solution that has a pH of 5.38. You already have a solution that contains 10. mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The pKa of acetic acid is 4.74.Express your answer numerically in millimoles.
a 200 gram sample of a large biomolecule was dissolved in 15 grams of carbon tetrachloride. the boiling point of this solution was determined to be 77.85 degees celcius. calculate the molar mass of the biomolecule.
Calculate the equilibrium constant of the reaction I2(g)52 I(g) at 1000 K from the following data for I2: # = 214.36 cm
25.0 mL of 1.50M LiOH are neutralized by 15.0mL of nitric acid. what is the molarity of HNO3?
particular sample of pure iron requires 0.595 kJ of energy to raise its temperature from 25oC to 45oC. The specific heat of iron is 0.45 J/g oC. What must be the mass of the sample?
empirical formula for 2.80 g nitrogen and 8.00 g oxygen. what is the molecular formula empirical formula of NH2Cl, molar mass = 51.5 g/mol
The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transiytion state theor is valid
The rate constant of a reaction is 4.7 10-3 s-1 at 17°C and the activation energy is 33.6 kJ/mol. What is the value of k at 75°C.
The products of our reaction (1- and 2-heptene) can form peroxides upon standing in air for a prolonged period of time
This was allowed to react under reflux for an hour and then the products seperated. I wrote out a mechanism before lab and ended up predicting 4-chlorobenzoic acid and 4-chlorophenol as my final products.
A gas has a volume of 590 mL at a temperature of -55.0C. What volume will the gas occupy at 30.0C.
What would happen to the solubility of potassium chloride in water as the water temperature increased from 25 degrees celsius to 100 degrees celsius?
Using stereoformulas, show that reduction of (R)-benzoin from the more hindered face would give give (R,R)-hydrobenzoin. Please no links to external sites. Be clear and concise.
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