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Problem- A particular reactant decomposes with a half-life of 151 s when its initial concentration is 0.331 M. The same reactant decomposes with a half-life of 211 s when its initial concentration is 0.237 M. Determine the reaction order and the rate constant (k) and the units of k.
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Problem- What is the volume of 5.00 x 10^-3 M HNO3 is needed to titrate 80.00 mL of 5.00 10^-3 M CA(OH)2 to the equivalence point
The vapor-pressure lowering upon forming solution can be utilized for determining molecular weight of nonvolatile solutes. Consider a solvent with known P1* and molar mass M1. Upon adding m2 kg of a solute tom1 kg of the solvent, the solution vapo..
Problem- Estimate the calcium concentration in a groundwater sample, which has a pH of 5.50. Assume that the groundwater at his location is saturated with CO2 at a partial pressure of 0.1 atm.
If the molar mass is 88 g/mol and the percent composition is 54.5% carbon, 9.15% hydrogen and 36.3% oxygen, what is the molecular formula of dioxane?
How many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g . The specific heat of water is 4.18 J/g*K .)
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
an unknown metal m reacts with sulfur to form a compound with the formula ms. if 4.37 g of m reacts with 2.51 g of s
Name two organic compounds that cannot be extracted effectively from an aqueous solution by means of an immiscible organic solvent such as ether or cyclohexane.
Problem- The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation
In analyzing a general unknown containing ions from several of the cation groups, a student treated the decante from Group II with Na3Co(NO2)6 and observed that a precipitate formed.
Question- The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hydrogen, and oxygen. A 2.001 g sample of BHT was combusted in an oxygen rich environment to produce 5.995 g of CO2(g) and 1.963 g of H2O(g). Insert sub..
In hydrogen bonding does the Hydrogen have to be connected to an O, N or F in its own molecule and be bonded to a O, F or N with another hydrogen
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