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The rate constant (K) for a reaction was measured as a function of temperature. A plot of ln K versus 1/T (in K) is linear and has a slope of -9.50×10^3 K. Calculate the activation energy for the reaction.
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
According to the VSEPR theory, if there are three electron domains in the valence shell of an atom, they will be arranged in a(n) A. Octahedral Geometry B. Linear Geometry C. Tetrahedral Geometry D. Trigonal Planar Geometry E. Trigonal Bipyramidal..
The formula of the precipitate is Cu(IO3)2. A saturated solution of this substance was made in 0.01 M KlO3. The copper concentration was found to be 0.0012M. Determine the [IO3^-] and the Ksp of the substance.
calculate the mL of MnO4 added to reach the endpoint. (b) calculate moles of MnO4 added to reach the endpoint. (c) calculate the number of moles of H2O2 in sample.
At a particular temperature and 2.00x10^-2 M, concentration versus time data were collected for the reaction, and a plot of the natural log versus time resulted in a straight line with slope value of -2.97x10^-2 min^-1. Determine the rate law, int..
how many grams of KO2 are needed to produce 180.0 L of O2 at 18.0 C and 1.00 atm
Given an equation and an enthalpy change, how much heat is involved when a certain amount of an element
For the diprotic weak acid H2A, Ka1 = 3.2 × 10-5 and Ka2 = 7.9 × 10-7. What is the pH of a 0.0400 M solution of H2A? What are the equilibrium concentrations of H2A and A2- in this solution
40.0 ml of an acetic acid of unknown concentration is titrated with 0.100 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 5.10. What was the concentration of the original acetic acid solution. (Ka(CH3COO..
For the following reaction: 2A + B + C --> 3P If the rate of disappearance of A ((delta)A/(delta)t) is -0.77 mol/(L s), what is the rate of appearance of P in mol/(L s)?
Assign the lines in the UV photoelectron spectrum of CO shown below and predict the appearance of the UV photoelectron spectrum of the SO molecule.
calculate the volume of water needed to dilute the anti-freeze from 0.20M in 0.260 litres to 0.13M.
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