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The ionization energies of rubidium and silver are 4.18 and 7.57 eV, respectively. Calculate the ionization energies of an H atom with its electron in the same orbitals as in these two atoms and account for the difference in values
A piece of titanium metal with unknown mass is heated in boiling water to a temp of 99C. It is removed from the boiling water and dropped into a coffee cup calorimeter containing 83.5g water.
What is the molar concentration of a H3PO3 solution if 150.00 mL of the solution was required to neutralize 75.00 mL of NaOH whose concentration was 1.50 molar?
Many fish which normally line in mountain streams (where the water temperature is 0 degrees celcius) die when water in which they live warms up to 25 degrees C. How many oxygen molecules are there in 1.0 ml of water at these two temperatures?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.120 M HClO(aq) with 0.120 M KOH(aq).
What mass of hydrogen can be produced from 2.90 g of aluminum and 14.0 g of HCl in the above unbalanced reaction?
how much current is produced by the dissolution of .525 g of chromium per hour to produce chromium (III)?
suppose a student attempts to do an ion exchange on a column that is already nearly saturated with CO2+ and Zn2+.
A buffer initially contains 0.10 mol acetic acid and 0.13 mol of sodium acetate in 1.00 L. 0.02 mol of potassium hydroxide is added to the buffer
The standardized perchloric acid solution is then used to titrate 41.10 mL of a solution of sodium lactate (NaC2H5OCOO). An endpoint is reached when 18.22 mL of perchloric acid has been added.
If the excess of Cr3+ is discharged into a waste stream that is saturated with atmospheric oxygen at the pH of 6.0, would there be a significant conversion of Cr3+ to dichromate at equilibrium? Present numerical results to justify your conclusion.
Why are the standard reagents used in neutralization titrations generally strong acids and bases rather than weak acids and bases?
Calculate the delta G at 400K for the following phase change: Sulfur(monoclinic) to sulfur rhombic. Do not assume that delta H or delta S are independent of temperature
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