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The decomposition XY is second order in XY and has a rate of 7.02 E-3 M-1. s-1 at a certain temperature.
A. What is the half-life for this reaction at an initial concentration of 0.100M?
B. How long iwll it take for the concentration of XY to decrease to 12.5% of its initial concentration when the initial concentration is 0.200 M?
C. If the initial concentration of XY is .0500M, What is the concentration of XY after 5 E 1 s ?
D. If the initial concentration of XY is .150 M, how long will it take for the concentration to decrease to .062 M?
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 74% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
The potential energy associated with being a given height above the Earth%u2019s surface is mgh. Using this definition of potential energy, determine the ratio for the pressure at height h (Ph) to the pressure at height h = 0 (P0).
The acid dissociation constant for HClO2 is Ka = 1.1 x 10-2. You add 1.08 g of HClO2 to 427 ml of 0.0150 M NaClO2 solution. What are the equilibrium concentrations of H3O+, ClO2-, and HClO2
calculate the number of PCl3 molecules formed when 97 P4 molecules and 606 Cl2 molecules react?
A 99.11 g sample of a highly radioactive element is determined to contain 0.4271 mol of the element. What is the element
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Calculate the amount of heat liberated when 4.80 g CH4 reacts with an excess of oxygen.
An orange compound was added to the top of a chromatography column. Solvent was added immediately, and the entire volume of solvent in the solvent reservoir turned orange.
Draw electron-dot formula and determine the shape for each of the following: a) NH4^+; b) O2^2-; c) COCl2 (C is the central atom); d) BCl3.
when 24 copper pennies are submerged in water the pennies displace 8.26 cm3 of water. if the combined mass of the
Sodium methoxide is a weaker base than butyllithium (the base commonly used in the Wittig reaction). Suggest a reason why a weaker base
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