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Question- Calculate the pH of a solution that contains 3.25 M HCN (K a = 6.2 x 10 -10), 1.00 M NaOH and 1.50 M NaCN.
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How many grams of Na2CO3 Standard must be used if the titration is expected to require 40 mL of 0.1 M HCl titrant?
What difference would you expect to see between the ionizaition energy of element 115 and that of element 116? Which IE would be larger? Explain in terms of expected electron configurations.
Calculate the concentration of a sodium hydroxide solution prepared by dissolving
Driving across Death Valley
The two isotopes of uranium, U-235 and U-238 can be separated by effusion of the corresponding UF6 gasses. What is the ratio of the root mean square speed 238-UF6 to that of 235-UF6
When 49 mL of a solution containing 3.1 M AlCl3 is diluted to 53 mL, a dilute solution is formed. How many moles of Al3+ ions are contained in 14 mL of the dilute solution
The solubility of AgCrO4 is several times greater than that of AgCl, so the red precipitate cannot form until all the chloride ions have effectively been removed from the solution.
A thermometer containing 9.5 of mercury has broken. If mercury has a density of 13.6 , what volume spilled?
Explain what would the overall outcome of the Michaelis Menten parameter determination be if the concentration of the enzyme was increased by 2.5 fold
Problem- What is the molar mass of a material that has a mass of 0.155 g, and in a 250mL aqueous solution, has an osmotic pressure of 35.0 torr at 25oC
Assuming that the total pressure of the gases is 1.68 atm and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each gas.
The standard cell potential (E°) of a voltaic cell constructed using the cell reaction below is 0.76 V: Zn (s) + 2H+ (aq) ? Zn2+ (aq) + H2 (g) With PH2 = 1.0 atm and [Zn2+] = 1.0 M, the cell potential is 0.42 V. The concentration of H+ in the cath..
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