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How does science trace the chemical fluorine
Firms like Walmart, Target, and Kmart are often given as examples of competitors. Ironically, these firms are not what an economist would define as perfectly.
Enough of a monoprotic acid is dissolved in water to produce a 0.0142 M solution. The pH of the resulting solution is 2.51. Calculate the pKa for the acid
calculate the temperature change in the water upon complete melting of the ice. hint determine how much heat is
Calcium carbide, CaC2, reacts with water to form acetylene. CaC2(s) + 2 H2O(l) -> C2H2(g) + Ca(OH)2(s)
Which group 5 oxide dissolves in water to give the most basic solution. A) As4O10 B) P2O5 C) N2O5 D) P2O3 E) Bi4O6
Sketch the [1-11] direction within the (110) plane relative to an fcc unit cell. Include all atom-center positions within the plane of interest.
Determine the mole fraction of each component to at least three significant figures.
What is the pH at the equivalence point? the Ka of hydrofluoric acid is 3.5x10^-4.
The activity of an enzyme is close to zero at pH = 10 and above and high at pH = 6 and below. The activity of this protein probably depends upon the presence of an amino acid with R-group
For MgO, which has the NaCl structure, the unit cell edge is 4.21 Angstroms. Use the approach of Pauling to evaluate the radii of Mg^2+ and O^2-
Draw valid lewis structures for each of these ions. What orbital hybridizations are consistent with the molecular geometries?
Calculate the expectation values of for a particle in the state n=3 in a one-dimensional box.
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