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In niobium (Nb) metal, the valence orbitals are the 5s, 4d, and 5p orbitals. If the bonding in Nb metal is described used band theory, what fraction of the band would be filled with electrons? Assume that all valence bands (5s, 4d, and 5p) overlap. Show your work and your resulting band diagram.
Calculate the pH at the equivalence point in the titration of 25.00 mL of 0.120 M chloropropanoic acid (Ka = 7.8 x 10-5)
If the value of overall energy change of CsF(s) is +537.2 KJ/mol, and CsF2(s) is -1635.8 KJ/mol, which compound is more likely to form in the reaction of Cesium with flourine
It is estimated that more than 5 billion metric tons of CO2 is added to the atmosphere each year. Assume that CO2 is an Ideal gas at 25 oC and 1 atm.
a mixture with 75% R and 25% S has an optical rotation of -30. what is the optical rotation of pure R?
Describe four different potential pathways that can utilize pyruvate as a substrate. Show all of the pathways (draw them out) and what the final fate of pyruvate is in the respective pathway
What are the relative percentages of hydrogen cyanide (HCN) and cyanide ion in a dilute aqueous solution
Calculate the composition of air (percent by mass) assuming that it only contains nitrogen and oxygen and behaves like an ideal gas
How many grams of Mg2SO4 is required to make up 100mL of 20g/L Mg2SO4 solution in water?
Salicylic Acid and Acetic Anhydride --> Acetylsalicylic Acid and Acetic Acid C7H6O3 + C4H6O3 --> C9H8O4 + C2H4O2 Salicylic Acid - 1.75g 1.6 equivalents of acetic anhydride for every equivalent of salicylic acid.
Write an overall balanced equation and a net ionic equation for the complete neutralization of aqueous H2SO4 with aqueous NaOH. Be sure to include phase designations such as (s) and (aq).
Calculate the energy that must be transferred as heat to a van der Waals gas that expands reversibly and isothermally from Vi to Vf.
Determine the calculated pH of the solution if initially there is 2.0mL of CH3COOH at an initial concentration of 0.89M and 0.80mL of 1.0M Hydrochloric Acid is combined.
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