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A 0.1276 g sample of a monoprotic acid (molar mass=1.10 x 10^2) was dissolved in 25 mL of water and titrated with 0.0633 M NaOH. After 10 mL of base had been added, the pH was determined to be 5.57. What is the Ka for the acid?
A 1.70-g sample of a large biomolecule was dissolved in 14.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
In order to induce the error in the precision and accuracy section ,a) would the balance be registering masses too low or too high?
How would you know which is the most polarizable and how would you order the boiling points from lowest to highest?
How long would it take for 1.50 of water at 100.0 to be converted completely into steam if heat were added at a constant rate of 18.0
Predict whether each of the following molecules is polar or nonpolar: (a) CCl4 (b)NH3 (C)SF4 (d) XeF4 (e) CH3Br (f) GaH3
It is known that the Co2+-ligand complex obeys the Beer-Lambert Law. Calculate the mass percentage of the cobalt in the original sample.
a feed mixture of ethanol and water is 40 mole $ ethanol. the feed is at 200 degrees C and is at a high enough pressure that it is a liquid. It is input into the column through a valve, where it flashes. Column pressure is 1 kg/cm^2. Find the slop..
Derive the activation energy for a reaction that proceeds 2 times faster when the temperature is raised from 20 C to 30 C.
synthesis of methyl orange as a guide, outline an experimental strategy for its synthesis, using any shelf-stable starting materials of your choice. Be sure to also include relevant details such as solvents, reaction temperature, cooling/heating
When heated, lithium reacts with nitrogen to form lithium nitride: 6Li(s) +N2(g) → 2Li3N(s)
Calculate the pressure of 4 g of nitrogen gas in a 1 L container at 20.0 ?C.
Why does aluminum hydroxide readily dissolve in concentrated NaOH but not in concentrated NH3. Please give a thorough explanation, not just a short answer.
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