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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.
How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3. WHY
The pH of a 0.55 M aqueous solution of hypobromous acid, HBrO, at 25.0 °C is 4.48. What is the value of Ka for HBrO.
A water sample contains 118mg/L of bicarbonate ion, 19mg/L of carbonate ion, and has a pH of 9.5. What is the alkalinity of this water expressed as mg/L of CaCO3? Answer: 130mg/L as CaCO3.
refrigerators are usually kept at about 5 c while room temperature is about 20 c. if you were to take an empty sealed
calculate deltas universe for the decomposition of 1 mol of liquid water to form gaseous hydrogen and oxygen. is this
Calculate the percent by mass of calcium carbonate in the rock, assuming that it is the only substance reacting with the HCl solution.
Using the diagrams provided below, draw an atomic-scale view for the chemical species that are present in the solutions in each beaker. In your diagrams, be sure to Include all chemical species except water molecules
Draw a lewis dot structure for ketoisophorone to figure out how many non bonding pairs of electrons there are in the molecule.
Does the body have an impact on the brain? If so, how much? What do you have to back up your position?
Write down mass balance and charge balance equations for 0.100mol L-1 Na2C2O4(aq). Mass Balanced Equation= Charge Balance Equation=
Carbon tetrachloride, CCl4, is nonpolar. What forces hold the molecules together?
It takes 49.0 J to raise the temperature of an 11.7 g piece of unknown metal from 13.0 C to 24.0 C. What is the specific heat for the metal?
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