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Aspirin (acetylsalicylic acid, ) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 of aspirin in 0.600 of water and measured the . What was the value calculated by the student if the of the solution was 2.60?
What is the dipole moment of HI in C.M 2. The distance between the atoms of H-I is 1.61A . What is the distance in meters. 3. What is the charge associated with each side of the HI molecule 4.What is the percent ionic character of the H-I bond
In a coordination compound, which ion would you expect to have a higher coordination number with a bidentate nitrate group (NO3-), Co3+ or Ir3+? Why?
The buffer has a concentration of 150 mMol ( 150 mM of KH2PO4 / 150 mM K2HPO4. The pKa of the drug ephedrine is 9.6. Will the drug have a negative, positive, or neutral?
pvc processors use a very high molecular weight acrylic processing aid for production of rigid pvc foamsheet of high
The amino acid alanine is shown below in several different Fischer projections. Sort the structures according to whether the Fischer projection represents alanine with the R configuration or alanine with the S configuration.
an aerosol spray can with a volume of 270 ml contains 3.0 g of propane gas as propellant. what is the pressure in atms
What are the equilibrium partial pressures of \rm PCl_3 , \rm Cl_2, and \rm PCl_5, respectively. For the exothermic reaction PCl3(g)+Cl2(g)\rightleftharpoons PCl_5(g) K_{\rm p} = 0.100 at a certain temperature.
Analyzing a new reaction Consider the following elementary steps that make up the mechanism of a certain reaction: 2X -> Y + Z Y + L -> M + Z Part A What is the overall reaction
Alum precipitates to form aluminum hydroxide floc in water at near neutral pH. what is the balanced chemical equation for this process
Construct a cel from Ni(s), Ni^2+(l), Cd(s) and Cd^2+(l) a. What would be the anode and what would be the cathode? b. indicate the half reactions happening at each the anode and the cathode
Describe how a phospholipid differs from other fatty acids. How does this difference allow the formation of a bilayer in an aqueous medium
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.
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