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1. What is the pH of a .2M MES solution?
Additional Info: MES Ka is 8.13 x10^-7 and pKa is 6.089
2. What would be the pH of a .2M Tris solution (0.5 L) after addition of 30mL of 3M KOH?
Additional Info: Tris Ka is 8 x 10^-9 and pKa is 8.08
3. What percentage of the cysteinyl sulfhydryl group is deprotonated at pH 9.0 if cysteine's thiol pK is 8.37?
The concentration of potassium ions inside a nerve cell is around 20 to 30 times that outside the cell. Calculate the potential difference between inside
If 4.05 x 1023 molecules of a substance have a mass of 86.2 g, what is the molar mass of the substance? How many nitrate ions are present in 0.200 mol of Zn(NO3)2?
Important information about Chair Conformation, Circle the least stable conformation as well.
What are the concentrations of Cu2+, NH3, and Cu(NO3)4 2+ at equilibrium when 18.8 g of Cu(NO3)2 is added to 1.0 L of a .800 M solution of aqueous ammonia? Assume that the reaction goes to completion and forms Cu(NH3)4 2+.
What is the % by mass of CaCl2.2H2O in the salt mixture B. how many grams of the excess reactant K2C2O4.H2O reacted in the mixture C. How many grams of the K2C2O4. H2O in the salt mixture remain unreacted
The crew members used a factor of 1.77 for the fuel density-the problem is that 1.77 has units of pounds per liter and not kilograms per liter! What is the fuel density in units of kg/L? What mass and what volume of fuel should have been loaded?
Calculate the delta h required to 1 mole of ice at -25 degrees celcius to convert steam at 125 degrees celsius
Determine the volume of the methane at STP if bacterial culture isolated from sewage produced 35.5 mL of methane, CH 4 , at the temperature of 31 degree Celsius and at pressure of 753 mmHg.
The chemical structure of the designated chemical, with the functional groups identified, the chemical's physical form and appearance.
a metal object with a mass of 19g is heated to 96 degrees c then transferred to a calorimeter containing 75 g of water
Nuclides above the valley of stability can become more stable through which of the following processes
A mixture of 3.0 g of 1,1-diphenylethylene and 100 mg of sulfuric acid was heated for 2 hours. Upon cooling, 2.2 grams of crystalline 1,1,3,3-tetraphenyl-3-methyl-1-butene precipitated from the mixture. What is the percent yield of the crystalline..
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