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Consider the titration of a 26.0 mL sample of 0.175 M Ch3NH2 with 0.150M HBr . Determine each of the following. 1) the initial pH? 2)the volume of added acid required to reach the equivalence point? pH? 3)the pH at 5.0 mL of added acid ?? 4) the pH at the equivalence point??? 5) the pH after adding 6.0 mL of acid beyond the equivalence point ??
WHY did lactose produce mnCO2 in an anaerobic fermentation experiment? (Hint: lactase mechanism, how do sugar transporters work,
How many moles of oxygen are in a compressed cylinder that has a volume of 8.00 L at a pressure of 41.0 atm and at 25 degrees celcius?
Use standard enthalpies of formation to determine ?Horxn for: 3NO2(g) + H2O(l) ? 2HNO3(aq) + NO(g) Enter in kJ. Find the change in internal energy for this reaction. Enter in kJ.
Calculate the equilibrium concentration ratio of phosphocreatine to creatine in the following reaction if the concentrations of ATP and ADP are 8.0 mM and 1.6 mM, respectively.
Draw the two remaining resonance structures (in any order), including nonbonding electrons and formal charges. Which is the most stable
A student has sample of HNO3 of 340 ml at 25 degrees celsius and add water of 110 ml at 95 degrees celsius then determine the final temperature of the mixture
At 25 degree C the heat of fusion of Al is 10.6 kJ/mol and the heat of sublimation is 326.4 kJ/mol. What is the heat of vaporization of Al at 25 degree C.
A 4.78 L sample of H2O(g) reacts at a temperature of 375°C and a pressure of 692 mm Hg. How many grams of NH3 can be produced?
What are the molality and mole fraction of solute in a 29.3 percent by mass aqueous solution of formic acid (CH3OH)?
Briefly explain the geometry (hybridization) of an amide nitrogen, and resonance explanation for the conformational stability of the amide
Important information about Degree of Unsaturation, Dieldrin, C12H8Cl6O, is a pentacyclic compound formerly used as an insecticide.
What is the pH of a buffer prepared by adding 0.45 mol of the waek acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66e-7
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