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Concentrated hydrochloric acid is 37.5%HCl by mass and has a density of 1.205g*cm^-3. Define what volume (in Ml) of concentrated hydrochloric acid must be used to prepare 10.0l of0.7436m HCL(aq)?
Then 2.00 mL of solution containing 0.0156 M dopamine was mixed with 90.0 mL of unknown, and the mixture was diluted to 100.0 mL in volumetric flask. The signal from the new solution was 58.4 nA. What is the dopamine concentration in the unknown s..
A 10.00 mL 0.25 M formic acid sample is being titrated with 0.25 M NaOH. What is the pH of the solution after adding 15.00 mL NaOH solution?? Ka=1.8x10-4
you add 7.3 iron to 25.10 of water and observe that the volume of iron and water together is 26.03. calculate the
Under standard state conditions, what spontaneous reaction will occur in aqueous solution among the ions Ce4+, Ce3+, Ge3+ and Fe2+. Include the state of each species. Iron: and cerium: Also Calculate the Delta G standard and Kc for the reactions
a gaseous mixture consists of 80.0 mole percent n2 and 20.0 mole percent 02. suppose water is saturated with the gas
A 4.78-g sample of aluminum completely reacts with oxygen to form 6.67 g of aluminum oxide. Calculate the mass percent composition of aluminum in aluminum oxide
the rms speed for nitrogen molecules at 300k is 520ms. what temperature would be required if the rms speed of nitrogen
Based on the data/information given in items #1 to #4, explain/justify all results derived from the data/results in each experiment. For each peptide you are required to give the sequence of the smaller peptides T1,T2,CT1, and CT2, before you dete..
1. Average speeds of gas particles (give answers in m/s) a. Calculate the average speed of Hg vapor atoms at 500oC b. Calculate the root-mean-square speed
Write the equilibrium expression, and calculate the equilibrium constant for this reaction at this temperature.
positronium consists of an electron and a positron same mass as electron but opposite chargeorbiting around their
Why should a distilling flask be filled to not more than two-thirds of its capacity at the beginning of a distillation procedure?
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