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50ml of 0.1M solution of a weak acid HX are added to 100ml of 0.05M NaOH. The pH of the final solution is found to be 9.0 at a temperature of 298 K. what is the value of the ionization constant of the weak acid HX at 298 K? You may ignore the contribution of the self-ionization of water.
What is the value of at this temperature? 23.15 At this temperature the rate constant for the reverse reaction is 310. . What is for the reaction?
To calculate the concentration of protein is it 10/990 or 10/1000? And does the original concentration of solution even matter when calculating the solution concentration?
A sample of gas has an initial volume of 2.4 L at a pressure of 855 mm Hg and a temperature of 298 K. If the gas is heated to a temperature of 387 K and expanded to a volume
You have successfully purified a protein to homogeneity. From gel permeation chromatography studies, you determine that the protein has a molecular weight for 235,000 daltons.
Solid silicon and solid magnesium chloride form when silicon trichloride gas reacts with magnesium metal. Write a word equation and an unbalanced formula equation.
Consider a galvanic cell that uses the following reaction. 2 Ag+(aq) + Sn(s) 2 Ag(s) + Sn2+(aq) Calculate the potential at 25°C for a cell that has the following ion concentrations
The mass percentage of iodine in the compound was determined by converting the iodine in a 0.850 g sample of the compound into 2.31 g of lead(II) iodide. What is the empirical formula of the compound? Could the compound also contain oxygen?
The activation energy for the following reaction is 60. kJ/mol. Sn2+ + 2Co3+ → Sn4+ + 2Co2+
A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00 L of 1.55M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 50.2g.
The crystalline form of rhodium (Rh) is composed of face-centered cubic unit cells. If the density of rhodium is 12.42 g/cm3 at room temperature
The original concentration of Glucose-6-phosphate is 0.25 M, but when the system reaches equilibrium, only 2.5% of the original glucose-6-phosphate remains. calculate the Keq.
How many kilojoules are required to heat the nugget from 500 C to 1064 C and convert all the gold to liquid?
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