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The two amino acids, glycine and alanine, can form two different dipeptides. Draw one of the possible dipeptides as it would appear at a pH of 7. Be sure to include any necessary nonzero formal charges in your drawing
compute the volume of 3m naohaqaqueous sodium hydroxide needed to neutralize the phosphoric acids and acetic acid in
What mass of AlCl3 can be formed from 5.000 mol NiCl2 and 2.000 mol Al?
Write chemical formulas for (a)lithium bromide,(b)calcium sulfide,(c) sodium sulfide,(d)beryllium oxide,(e) the chlorine molecule
if a solution 110 mL HBr has unknown concentration and is titrated with 80 mL of .150 M NaOH base soultion. Calculate the concentration of the HBr solution.
When 50.0 mL of a 0.3000 M AgNO3 solution is added to 50 mL of a solution of MgCl2, and AgCl precipitate forms immediately. The precipitate is then filtered from the solution, dried, and weighed.
a 200 ml stock solution contains 0.9 m cacn2. when 100 ml of the stock solution is diluted to 120 ml how many moles of
To what general class of mechanisms does the attack of bromide ion, Br-, on the cyclic bromonium ion
Determine what ventilation rate (minimum) in m3/hr will be essential to keep the carbon monoxide concentration in his garage from the dangerous level of 1600 ppmv? What is your answer in this case?
Explain why the Rf values changed when the eluant was changed from 100% petroleum ether to a 95:5 mixture of petroleum ether-ethyl acetate.
State what these are, how they are made, and one way they can be used productively in research and one way they can be used in medical diagnostics.
How does this work? Do you just omit the H20/Oh-. Calculate the value for the equilibrium constant for each of the following aqueous reactions.
Suppose that 1.419 g of impure barium hydroxide is dissolved in enough water to produce 213 mL of solution and that 40.4 mL of this solution is titrated to the stoichiometric point with 8.3 mL of 0.0696 M HCl(aq). What percentage of the impure sam..
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