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Problem- Nicole, a botanist, discovered a monoprotic acid in an extract from a tropical plant and performed the following experiments: She titrates 100.0 mL of the plant extract with 0.100 M NaOH. The titration midpoint is reached at 25.6 mL of NaOH. The pH at this point is 3.59. By evaporating the solvent from the extract, she determines that there is only 0.124 g of acid per 10.0 mL of plant extract. What is the Ka value for the acid? What is the pH of the plant extract? What is the pH after the following additions of 0.100 M NaOH: 30.0 mL, 51.2 mL, 55.0 mL ? What is the molecular weight of the plant extract?
I desire to know how this is done please illustrate all steps in detail
if 69 kJ of heat is applied to a 1012 g block of metal, the temperature of the metal increasesby 11.4 degrees C. Calculate the specific heat capacity of the metal in J/g degrees C.
Table salt is composed of sodium and chloride. table salt is composed of 60.7% chloride ions. Calculate the mass of sodium ions, in 0.375 grams table salt.
Sodium carbonate reacts with silver nitrate to produce sodium nitrate and solid silver carbonate
one mole of an ideal gas (Cp=7R/2) in a closed piston cylinder is compressed from initial state of temperature =100 K pressure = 0.1 MPa to final state of pressure =0.25 MPa by the following pathways.
The addition of anhydrous calcium chloride to the crude product obtained from the separation procedure often results in the product becoming clear what causes this clearing
Calculate the amount of 6M NaOH required to react completely with 1.51 grams of Methyl Salicylate. How much of the 6M NaOH that you used was in excess of the theoretical amount?
A mixture of neon and oxygen gases at a total pressure 975 mm Hg contains neon at a partial pressure of 325 mm Hg. If the gas mixture contains 3.75 grams of neon,
At 373 K, Keq = 2.39 for the following reaction: SO2Cl2(g) = SO2(g) + Cl2(g) In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively.
Question- Antimony (V) chloride, SbCl5, dissociates on heating to give antimony (III) chloride, SbCl3 and Chlorine. SbCl5 (g) SbCl3 (g) + Cl2 (g), A closed 3.50 L vessel initially contains .0125 mol SbCl5. What is the total pressure at 248 degree..
sulfate dissolves as follows: Na2SO4(s) → 2Na+(aq) + SO42- (aq). How many moles of Na2SO4 are required to make 1.0 L of solution in which the Na concentration is 0.10 M?
Explain what are the relative numbers of each of the monomer units in this polymer? Give the ratio of acrylonitrile: butadiene: styrene. Utilize the lowest possible coefficients.)
An essential amino acid is one that you cannot make at a rate consistent with the normal growth and maintenance, which of the following sets consists of only essential amino acids
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