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A buffer solution is prepared by adding 0.125 mol of ammonium chloride to 500mL of 0.500 M aqueous ammonia. Explain what is the pH of the buffer? If 0.0100 mol of HCl gas is bubbled into 500mL of the buffer, Explain what is the new pH of the solution?
a sample of fresh grapefruit juice was filtered and titrated with the above i2 solution. a 100 ml sample of the juice
while mercury is very useful in barometers mercury vapor is toxic. given that mercury has a hvap of 59.11 kjmol and
All of the following are substrates or intermediates in the synthesis of phosphatidylinositol EXCEPT
Barium Nitrate is a not very soluble nitrate. Calculate the Ksp (at 25 degrees) from the following ΔG's
A chemist wanted to make 100 grams of SO2. She had only 12 grams if sulfur and 4 grams of oxygen. Unfortunately, the amounts of reactants were not enough to make the desired product.
TLC plate that is then developedi n a 1:1 hexane/ethyl acetate solution the solvent front is measured at 6.5 cm and the distance traveled by caffeine is measured at 2.15 cm. What can be determined about the identity of compound X in light of this ..
c8h18l252o2g----gt8co29h2ocalculate delta hrxn for the combustion of octanec8h18 a component of gasoline by using
Addition of HBr to 1-phenylpropene yield only (1-bromopropyl)benzene. Propose a mechanism for the reaction and explain using resonance structures why none of the other regioisomer is produced?
What is the approximate pH of a solution of the salt NH4(O2CCH3) (ammonium acetate)? No calculations -- only reasoning needed. pKa/pKb values in your notes
a solution is prepared by dissolving 2.86 grams of sodium chloride 3.9 grams of ammonium sulfate and 0.896 grams of
Metallic chromium can be made by the electrolysis of molten CrCl3. What mass of Cr is formed by passing a current of 7.44 A through molten CrCl3 for 4.10 days? Use F = 96,500 C/mol for Faraday's constant.
given the balanced equation representing a reacction2c2h67o24co26h2odetermine the total number of moles of oxygen that
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