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Using the Henderson Hasselbalch equation, calculate the amount of monosodium phosphate (NaH2PO4, MW=120.01 g/mol) and disodium phosphate (Na2HPO4, MW=141.96 g/mol) required to prepare 100.mL of a 200. mM phosphate bugger of pH 6.5
Consider the preparation of benzalacetophenones (chalcones). draw the chalcone product if the aldehyde
solution x has a pH of 9.5 and solution y has a pH of 7.5. a)which solution is more acidic? b)what is the [H3O^+] in each? c)what is the [OH^-] in each
We had this experiment where we took 4-bromo-N-ethanoylbenzeneamine and we refluxed it with HCl to achieve hydrolysis. We then added enough NaOH to render the solution pH 8. We then distilled the mixture in steam to yield 4-bromoaniline. Why was t..
Calculate the amount of heat required to heat a 3.6 kg gold bar from 25 C to 64 C. Specific heat capacity of gold is 0.128 j/g C.
What is the volume of a sample of chlorine gas with a density of 0.0032 g/cm3 and a mass of 1.45 g?
Using the information below, what is the most stable form of sulfur at 298K and 1atm? (no calculations needed) S(rhomic): V=0.016, delta H formation=0, delta G formation=0, Standard molar S=31.8, standard molar Cp=22.64 S(monoclinic)
Calculate the standard reaction enthalpy for the formation of boron trifluoride, which is widely used in the chemical industry:B2O3(s) + 3CaF2(s) > 2BF3(g) + 3CaO(s).
What is the mass percent of sucrose (C12H22O11, Mm=342 g/mol) in a 0.350-m sucrose solution?
How do I calculate the product distribution calculations of the three peaks? Or the product ratios? The first peak was at 0.600, second at 0.95. Those are the retention times
What range of pH is suitable for this kind of buffer? Calculate the ratio of phosphoric acid to phosphate to gice you pH .= 6.8
Why is sodium bicarbonate used with acids and used in cooking
A 120-pound person uses 3 Calories per minute walking at a 20 min/mile pace. Approximately, how many miles would a person have to walk to burn off a scoop of ice cream (175 Calories)?
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