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When we looked at assigning the electrons in nitrogen to sites in the 2s and 2p orbitals, we used the 2s anti-bonding site. Which statement about this site is not true? A) This anti-bonding electron site has the second lowest energy level of all the sites in the 2s and 2p orbitals. B) Although this site is not desirable for making a bond between atoms, it is a good site in the sense that the electrons can be close to the nucleus. C) This site can accommodate a maximum of two electrons (i.e., one electron pair). D) The energy level for this site is very similar to the energy level for the ? 2s orbital site.
From your previous knowledge of the tendencies of certain metals to rust or tarnish, and from your reading in this experiment, select at least three metals from the following list which are quite active, three which are moderately active,
The formation constant Kf for the complex ion Zn(OH)42- is 2.8 1015. What is the concentration of zinc ion, Zn2+, in a solution that is initially 0.50 M in Zn(OH)42-
Tests on a sphere are conducted in a wind tunnel at an air speed of U0. the velocity of flow toward the sphere along the longitudinal axis is found to be u=-U0(1-r0^3/x^2) where r0 is the radius of the sphere and x is the distance from its center.
An aqueous vinegar sample contains 5.4% acetic acid by mass and has a density of 1.006 g/mL. Calculate the amount of acetic acid in grams in 2.00 L of this vinegar. Report your answer using the correct number of signi?cant ?gures.
What is the pressure inside a 5.00 L vessel containing 0.0040 mol of nitrogen gas at a temperature of 23 degrees C
What is the pH of a 0.15 M solution of the weak base ammonia (NH3). The Ka of the conjugate acid is (NH4) is 5.6e-10.
a certain substance has a molar enthalpy of vaporization of 31.6 kj mol. How much of the substance is in a sample that requires 57.0kJ to vaporize?
Teeth are made principally from the mineral hydroxyapatite, Ca5 (PO4)3OH, which can be dissolved in acidic solution such as that produced by bacteria in the mouth
what does it mean to manipulate the solubility of insoluble organic compounds by salt formation
It was determined in an experiment that a balloon filled with O2 gas with mass 32.0g in a 1.0 dm^3 volume exerts 21.6 atm of pressure at 0 degrees Celsius. Does Oxygen act like a perfect gas
Draw the structure of (E)-2,3,5-trimethyl-3-hexene. Clearly show the proper (E) or (Z) stereochemistry about the double bond.
Which molecule: water or ethanol is "more" polar? (By "more polar" I mean which molecule will have a larger net dipole moment
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