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State molecular geometries for the reactants and the product of the reaction of PF5 with the Lewis base NH3 (what adduct is formed?). Include geometry and formal charges in the structures. Also, what hybridization changes occur when PF5 reacts with NH3?
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. Write and equation that shows how this buffer neutralizes added bases.
In any chemical reaction, the quantities that are preserved are what?
Calculate the equilibrium concentration of Zn2+(aq) in a solution that is 0.0125 M Zn(NO3)2 and 0.600
The benzene-toluene system obeys Raoult's law because benzene and toluene molecules have similar shapes and electronic structures
Two parallel disks having diameters of 50 cm are separated by a distance of 10 cm. One disk also has a 20-cm-diameter hole cut in the center. Find the shape factor from the disk A1 to the one without a hole A3.
The inventor proposed the revolutionary design of the new engine based on the heat stored in the ocean. The inventor plan is to mount it on a boat in San Francisco and set off on a journey across the Pacific Ocean. Heat is extracted from the ocean
chromatogram for the presence of compounds other than isopentyl acetate. Explain the presence of any additional compounds
Estimate the total calories in a slice of bread that has 9.0 g of carbohydrates, 2.0 g of protein, and 1.0 g of fat. What percentage of total calories is from fat?
At 1100 K, Kp = 0.25 for the following reaction. 2 SO2(g) + O2(g) reverse reaction arrow 2 SO3(g) What is the value of K at this temperature?
the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid solution? Will it be too high, too low, or unaffected
a compoud is known to contain only carbon, hydrogen and oxygen. If the complete combustion of a .150 g sample of this compoud produces
2.914 gram sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temperature greater than 170 degrees celcius in a crucible until a constant mass is reached.
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