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A first order reaction has a half life of 1.1 s. if the preliminary concentration of reactant is .142 M, explain how long will it take for the reactant concentration to reach .001 M?
A) 0.127 s
B) 4.5 s
C) 7.87 s
D) 1.59 s
E) 3.09 s
Write the shorthand electronic configuration, the # of unpaired electrons, and whether it is paramagnetic or diamagnetic for the following elements or ions.
If the reaction of 2.50 g of aluminum with 2.50 g of oxygen produced 3.50 g of aluminum oxide, What is the % yield of the reaction?
Sucrose (C12H22O11, table sugar) is oxidized in the body by O2 via a complex set of reactions that ultimately produces CO2(g) and H2O(g) and releases 5.64 x 103 kJ/mol sucrose. What is q (heat change) per gram of sucrose oxidized
Calculate the standard reaction enthalpy for the formation of boron trifluoride, which is widely used in the chemical industry:B2O3(s) + 3CaF2(s) > 2BF3(g) + 3CaO(s).
effectively prevents hemoglobin from transporting oxygen to cells. How is the carbon monoxide acting in this process?
Calculate the [H3O+] of the following polyprotic acid solution: 0.330M H3PO4 and 0.390M H2C2O4
normally supplied in metal containers under pressure the fuel exists as a mixture of liquid and gas so high
This is question is about the Purification Via Chromatography lab: 1.) Briefly discuss the interactions involved in a TLC plate (silica gell and solvent system; adsorption versus solubility). How does variation in polarity of a solvent system affe..
Ka for HCN is 4.9 × 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide
traditional MALDI mass spectrometry, what are two factors that limit the spatial resolution that can be obtained in imaging mode?
Some investigators modified the Cys 278 with iodoacetamide and found that the enzyme activity was abolished as a result. They concluded that the Cys 278 residue was absolutely essential for enzymatic activity. But other investigators modified the ..
Calculate the mass of carbon dioxide released when 255 g of copper carbonate [molar mass = 123.5 g/mol] is heated (assuming that the reaction goes to completion). The molar mass of CO2 is 44.0 g/mol.
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