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At 25 °C, how many dissociated H ions are there in 305 mL of an aqueous solution whose pH is 11.91?
which of the following atoms with the specified electronic configuration would have the lowest first ionization energy? (a) (He)2s^2 2p^3 (b) (ne) 3s^2 3p^4 (c) [Xe]6s^1 (d) [Xe]6s^2 4f^14 5d^10 6p^1
considering the given equation as p4 s h2g --gt ph3g balance this chemical equation and determine how many grams
If the specific heat of the solution is 4.18 J/g(g*degreesC), calculate delta H for the reaction, as written. Ba(s) + 2H2O(l) = Ba(OH)2 (aq) + H2 (g) Delta H=?
multiple choice questions in radioactive decay.1.an alpha alpha particle is essentially a
Explain how you would prepare 500 mL of 2.0 molar stock Tris solution and 500 mL of 0.5 molar EDTA solution. Also explain how you would take your stock solutions and prepare a 100 mL Tris-EDTA buffer (TE buffer) that has a final concentration of 1..
500.0 mL of 0.170M NaOH is added to 585 mL of 0.200 M weak acid (Ka=2.66*10^-5) what is the pH of the resulting buffer. HA(aq) + OH(aq) ---> H20(l) + A^- (aq)
A sample of an unknown gas effuses in 11.7 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.23 min. What is the molar mass of the unknown gas?
what would be the effects when changing the eluting solvents
the temperature unknown. When the volume changes to 1.68L the temperature is found to be -220oC. What was the initial temperature in C?
Question- Construct a pigeon-hole diagram for a d^7- metal to illustrate all available microstates (terms) for this electronic configuration. Then construct a Orgel correlation diagram to illustrate how the ground F- and P-states split upon of an ..
One tablespoon of peanut butter has a mass of 15g . It is combusted in a calorimeter whose heat capacity is 130kJ/ degrees C . The temperature of the calorimeter rises from 22.1 degrees C to 25.2 degrees C. Find the food caloric content of peanut ..
rank the following compounds in order of decreasing vapor pressure. rank from highest to lowest vapor pressure. to rank
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