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Discuss how much of an initial sample of carbon-14 remains un-reacted after the 42,000years if the carbon- 14 nucleus decays by beta emission according to a first-order rate law with a half-life of
Determine the concentration of each ion remaining in the solution after the reaction has reached completion. Calculate the mass of solid produced after the reaction has reached completion.
Recalling that (S)-DOPA is effective against Parkinson's disease, would giving a patient the mixture in part be helpful or harmful? Briefly explain.
Find out which element tends to attract the electron density from the other in a covalent bond and enter the four letters corresponding to these choices (e.g. ACEG, BDFH, etc.) (A) O and (B) C; (C)
Write down the reactions showing how the nylon can be synthesized so that it will react with the basic dyes and the acidic dyes.
The current in the circuit is provided by i = t(root t^2 +1) amperes. Determine change (in coulombs) which passes the given point in the circuit after 1 s. (Suppose that q=0 when t=0.)
When 40.5 L of oxygen gas and 35.6 L of ammonia (NH3) gas react, nitric oxide (NO) and the water are produced. After the products return to 0o C and 1.00 atm, determine the numbers of gra
What volume of nitrogen gas at 2.00 atm and 175°C is needed to produce 75.0 g of lithium nitride when the Lithium metal reacts with the nitrogen gas to form the lithium nitride.
The molar solubility of PbI2 is 1.5 X10-3 mol/L. Determine the molar concentration of the iodide ion in a saturated PbI2 solution? Calculate the solubility constant Ksp, for lead (II) O
Determine equation describing motion of the object moving along the straight line when acceleration is a = 3t, when velocity at t=4s is 40 m/s, and when object has traveled 86 m from orgin at t = 2
The excess solid strontium is allowed to settle and a saturated solution of strontium hydroxide is prepared. A 25.o mL aliquot of the saturated solution is withdrawn and transferred to an Erlenmeyer
Although the phenolphthalein indicator is commonly used for neutralization reaction a, why instead is the methyl orange indicator recommended for the Molar solubility, common ion effect experiment.
Why the hydroxide ion is a stronger base than the ammonia and yet it reacts more slowly than the ammonia with a square planar complex. Explain in detail.
The Miers Company makes small engines for many manufacturers. How many engines must be shipped to every plant to minimize shipping costs? Determine the minimum cost?
Outline a reaction profile for substitution in a square planar complex in which (a) a five-coordinate intermediate exists, but bond breaking is more important than bond making (b) a five-coordinate
Explain the relative trans influence of H and D when the platinum-carbon NMR coupling constants for trans-[Pt (PEt3)2(CO)H]+ and trans-Pt(PEt3)2(CO)D]+ area996.2±0.6 and 986.3 ± 0.6 H
Why the water exchange by dissociation becomes increasingly important for both the [M(H2O)6]2+ and [M(H2O)6]3+ as one moves from left to right in the periodic table. Explain in detail.
An unknown contains a tri basic acid, citric acid, C6H8O7 and sodium sulfate, Na2SO4. If 1.731 g of unknown needs 29.32 mL of 0.487 M NaOH for complete neutralization of all reactive protons, deter
In an experiment A was heated at a certain temperature until its equilibrium pressure reached 0.14P, in which P is the total pressure. On heating, a gaseous compound A dissociates as follows A(g) is
Determine the wave number corresponding to the most and the least energetic spectral lines in the Balmer, Lyman and the Paschal series for the hydrogen atom.
Explain how would you change the procedures in the chapter "Dibenzalacetone by the Aldol Condensation Reaction" if you wished to synthesize benzalacetone instead? Discuss how about the Benz
Determine the percent dissociation of HSO4-if the true experimental heat of dissociation is the -0.238 kJ/mol and the measured the heat of dissociation is -21.8 kJ/mol.
Illustrate that for every non-zero element aεGF(127), we can determine multiplicative inverse a-1 (mod 127) with no more than 12 multiplications (including squaring operations).
Determine the concentration of Cl in a saturated solution of AgCl? Estimate the solubility of AgCl in the 0.1M NaCl?
Determine the equilibrium constant for the reaction when the 1.05 moles of Br2 are put in a 0.980-L flask, 1.20 percent of the Br2 undergoes dissociation.