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A buffer is initially 0.180M in 4-nitrophenol (HC6H4NO3) and 0.200M in potassium 4-nitrophenolate (KC6H4NO3). The Ka of 4-nitrophenol is 3.8*10^-4 and the buffer has a pOH = 3.47. If 0.20g on NaOH were added to 100ml of this buffer what would the pH of the buffer become?
Calculate the Standard deviation and the relative standard deviation of these analyses. Calculate the 95% confidence limits for the mean of this data. show the calculation process
Samples of the following volatile liquids are opened simultaneously at one end of a room. If you ate standing at the opposite end of the room, list the following species in order you would smell them? Assume that your nose is equally sensitive to ..
let's pretend a certain sterling silver ring has a mass of 31.25g. silver has 93%. determine the mass of silver found in the ring.
For each solution, calculate the number of moles of acid added. 3. For each solution, calculate the number of moles of OH- ion added.
Determine the molarity of a solution of the weak acid HCl)2; Ka = 1.10*10^-2 if it has a ph of 1.25.
What volume (L) of H2 at 745 torr and 20.oC can be prepared from 4.8 g of water? (Atomic weights: Fe = 55.85, O = 16.00, H = 1.008; 1 atm = 760 torr).
Determine whether each of the following causes an increase or decrease in the activity of the electron transport chain. 1. High NADH concentration
Calculate the number of grams of Mg(OH)2 that should dissolve in 100 mL of water.
when the base was 0.292 M and the cation was 1.89 M. Calculate the equilibrium dissociation constant (Kb).
Sketch an approximate titration of an NaOH solution with standardized HCl solution. Briefly explain the shape of the curve before the equivalence point, at the equivalence point, and after the equivalence point.
produces an alcohol isomeric to one obtained by hydroboration-oxidation of the same alkene. Reduction of the alkene affords the compound C5H12, while ozonolysis yields an aldehyde, CH3CHO, as one of the products. Deduce the structure of the alkene..
Phosphorus, P, is combined with flourine F2, to give a gaseous compound with the formula PFx. If you start with 2.982 grams of P and isolate 12.129 grams of PFx, what is the value of x?
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