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A 25.00 mL sample of 0.100 M CH3CO2H is titrated with 0.100 M NaOH. What is the pH of the solution at the points where 24.0 and 24.5 mL of NaOH have been added. (Ka = 1.8 x 10-5).
The molar mass of a protein is determined from a measurement of the osmotic pressure. If 0.01 grams of the protein is dissolved in 1 ml. and osmotic pressure of 5 x 10-3 atm develops at a temperature of 310 K, what is the molar mass of the protein..
The rule works particularly well for weakly interacting molecules, such as those of a noble gas, but not so well for water among other substances. Assuming the rule is exact, estimate the molar enthalpy of evaporation for Argon (in kJ/mol), whose ..
the mineral greenockite is a yellow sulfide of cadmium that is 78.0% cadmium and 22.o% sulfer. determine the emipirical formula of greenockite.
the reaction mechanisms could be coupled, how many moles of ATP will be needed to drive
Determine the rate law and the numerical value for K based on the following data :
A solution is prepared by dissolving 55.1 g of KCl in approximately 75 mL of water and then adding water to a final volume of 125 mL. What is the molarity of KCl(aq) in this solution?
Calculate the value of the activation energy for decomposation of NOCL?
As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chip products for the packaging label.
the temperature of a 2.0 liter sample of heluim gas at STP is increased to 27 celsius and the pressure is decreased to 80.0 kPa. what is the new volume of the helium sample.
What is the reaction that occurs with hexanal and propanol (give both the hemiacetal and acetal products)?
what is the diffrence between anatomical theory of diease, humoral concept of diease, and germ diease.
If the partial pressure of the cyclopropane in the mixture is 330 mm Hg and the partial pressure of the oxygen is 1.0 atm, what is the total pressure of the mixture in torr
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