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Coulomb's Law says that the force of attraction or repulsion between 2 charged particles is proportional to the charges and the distance between them: F?Q1Q2/d^2. An electron in an atom of Lithium sees an effective nuclear charge of 1.91 at a radius of 152pm. An electron in an oxygen atom sees an effective nuclear charge of 4.45 at a radius of 73pm. How much greater is the attraction between an oxygen electron and the nucleus as compared to an electron in the lithium atom. How does this relate to the first ionization energy of the two atoms? Are there any other contributing factors that affect the ionization energies? How do these numbers relate to the positions of the 2 elements on the periodic table?
The decomposition of NO2 (shown below) has a KP = 4.8 × 10-6 at a certain temperature. If 1.36 atm of NO2 is placed in a flask at this temperature
A metal rod has a mass of 17.62 g. A graduated cylinder contains 28.9 mL of water. The metal rod is added to the cylinder. The final water level is 35.1 mL. What is the density of the metal rod?
The pH of a white vinegar solution is 2.29. This vinegar is aqueous solution of acetic acid with a density of 1.09 g/mL. What is the mass percentage of acetic acid in the solution?
Calculate the empirical formula for a chemical compound which gives the following analysis: 12.6 percent lithium, 29.2 percent sulfur, and 58.2 percent oxygen.
Construct a frost circle for imidazole with one 2p orbital on each atom of the ring, and show relative energy of all pi molecular orbitals. fill in the appropriate number of electrons
If a 1000 kilogram sample of rock is 0.021% gold by mass, how much zinc is needed to react with the gold extracted from the rock? Assume that the reaction is 100% efficient.
chromatogram for the presence of compounds other than isopentyl acetate. Explain the presence of any additional compounds
Consider that sodium hydroxide is added to acetic acid (CH3COOH). What is the direction of equilibrium and by how much. Pka of Sodium Hydroxide
If the activation energy for a given compound is found to be 103 kJ/mol, with a frequency factor of 4.0 × 10^13 s^-1, what is the rate constant for this reaction at 398 K
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate
(a) An electroplating solution is made up of nickel(II) sulfate. How much time would it take to deposit 0.500 g of metallic nickel on a custom car part using a current of 3.00 A
Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq)
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