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you wish to make up a 0.1M buffer solution at a pH of 8.0. you have molecule A, which is a base that has a pKb=5.9 and FW= 121.1g/mole 1) what mass of A do you need? 2) what type of reagent do u need to add? 3) what ratio of the base to its conjugate acid is present in the final buffer?
Calculate concentration of soil organic matter in content given the concentration of organic carbon
draw the Lewis structure with all bonds and lone pairs (b) indicate directions in all bond dipoles (c) indicate the molecular dipoles and (d) indicate the shape of each molecule.
A 50.0g silver object and a 45.0 g gold object are both added to a 55.5 mL of water contained in a graduate cylinder. what is the new water level in the cylinder.
What is the theoretical concentration of the 2,6-dichloroindophenol solution? What is the theoretical volume of 2,6-dichloroindophenol needed to neutralize 10mL of the vitamin C standard solution?
A box of nails contains 90 straight nails and 10 nails too bent to be used. You randomly select 10 nails from the box. What is the probability that you removed 8 straight nails and 2 bent nails? To find the probability, first derive a general expr..
Using 1M aqueous HCl, 1M aqueous NaHCO3 and 1M Aqueous NaOH, could you separate an ethereal solution of benzoic acid and salicylic acid. If so, provide a flow chart indicating how; if not, explain why.
Ethanethiol is more soluble in water because sulfer has agreater electronegativity value than oxygen. Ethanethiol is more soluble in water because it has a lower molecular mass than 1-propanol.
Determine the pH at the point in which the acetate ion concetration equals the acetic acid concentration. (that is where the acetic acid is 50% ionized)
Use qualitative molecular orbital theory to explain why Na2O2 is diamagnetic and KO2 is paramagnetic (use the appropriate diagram from the notes. Use MO to explain the nature of the oxygen-oxygen bond in the complex anions). What is the oxygen-oxy..
A compounds H NMR spectrum shows a resonance at 5.47 and 3.49 ppm. What possible structural subunit does the compound contain
A given quantity of electricity passes through two separate electrolytic cells containing solutions of AgNo3 and SnCl2, respectively. If 2.00 g of silver is deposited in one cell, how many grams of tun are deposited in the other cell
The following compounds, listed with their boiling points, are liquid at -10 degrees celsius: butane, -0.5 degrees celsius: ethanol, 78.3 degrees celsius: toluene, 110.6 degrees celsius.
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