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Consider the unit cells shown here for three different structures that are commonly observed for metallic elements.
(a) Which structure(s) corresponds to the densest packing of atoms?
(b) Which structure(s) corresponds to the least dense packing of atoms?
What is the mass percent of NaCl in a solution obtained by mixing 50g of this solution with 215g of H2O?
Partition coefficient in octanol, A monoprotic acid with a Ka of 2.83 x 10-5 has a partition coefficient of 2.8 (favoring octanol) when distributed between water and octanol.
A major reason why benzoyl chloride undergoes nucleophilic substitution at a faster rate than methyl benzoate is that
The heat of vaporization of a liquid is the energy required to vaporize 1.00 mol of a liquid at its boiling point. In one experiment, 60.0 g of liquid nitrogen (boiling pt = -196C) is poured into a Styrofoam cup containing 200.0 g of water at 55.3..
The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron
Problem- An aqueous solution contains 0.147 M ascorbic acid (H2C6H6O6) and 0.103 M hydrochloric acid. Calculate the ascorbate (C6H6O6) 2- ion concentration in this solution.
If an electric car is capable of going 220. km on a single charge, how many charges will it need to travel from Boston, Massachusetts to Miami, Florida, a distance of 1486 mi, assuming that the trip begins with a full charge?
Use MO diagrams to place B2+, B2, and B2- in order of decreasing bond energy and decreasing bond length. A) Greatest bond energy Least bond energy B) Greatest Bond Length Least bond length
Proteins are sometimes embedded in the lipid membranes of cells. Many such proteins serve as channels to allow various things to flow in and out of the cells. The interiors of lipid membranes are very hydrophobic.
The activity of the antibiotic penicillin slowly decomposes when stored in a buffer at pH 7.0, 298K. The time dependence of the penicillin antibiotic activity
Explain how many moles of O2 are required to combine with 0.25 mol of glucose? Define how many moles of CO2 and H20 would be produced in this reaction? solve this with dimensional analysis
What are the steps involved in making a lewis structure of a molecule where there is either too few or too many electrons present?
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