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A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical formula must remain top secret. The company is interested in the drug's Ka value because only the dissociated form of the chemical is active in preventing cholesterol buildup in arteries.
To find the pKa of X-281, you prepare a 0.091M test solution of X-281. The pH of the solution is determined to be 3.00. What is the of X-281?
the normal boiling point for acetone is 56.5degc. at an elevation of 5300 ft the atmospheric pressure is 630. torr.what
The equilibrium constant kp for the following reaction is found to be 4.31 *10^-4 at 375 degrees C. N2(g)+3H2(g) 2NH3(g) Calculate the partial pressures of all species when equilibrium is reached.
A glass bottle of normal capacity 250 cm^(3) is filled brim full of water at 20 degrees Celsius. If the bottle and contents are heated at 50 degrees Celsius, how much water spills over?
what compound was condensed in an adol reaction to produce (2E)-5-methyl-2-(1-methylbutyl)oct-2-enal
literature review on electrochemistryyou are required to prepare a review-type essay on your given topic. insert your
the volume of blood in the body of a certain deep-sea diver is about 7.00 l. blood cells make up about 55 of the blood
At a distance of 42 ft, an ionizing radiation source delivers 3.5 rem of radiation. How close could you get to the source and still have no biological effects
How much heat is required to warm 223 g of ice from -44.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
A sample of nitrogen gas in a 4.6-L container at a temperature of 30.°C exerts a pressure of 3.9 atm. Calculate the number of moles of gas in the sample.
Calculate the pH of each of the solutions and the change in pH to 0.01 pH units caused by adding 10.0 mL of 3.48 M HCl to 350 mL of each of the following solutions
Calculate the maximum yield of substance X that could be obtained if 10g of X were recrystallized from 50 mL of the solvent at the above conditions.
Assuming the mixture has the same specific heat (4.184J/goC) and density (1.00 g/cm3) as water, calculate the heat (in J) transferred to the surroundings, qsurr.
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