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Calculate the change in entropy that occurs when 17.10 g of ice at -13.8°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l) are 37.5 J K-1 mol-1 and 75.3 J K-1 mol-1, respectively, and the molar enthalpy of fusion for ice is 6.01 kJ/mol.
The reaction is thought to follow second order kinetics which follows the relationship 1/[A]=1/[A]0+kt where [A] is the molarity at time, t, and [A]0 is the initial concentration.
Compare the results of your calculations from 2 and 4 above with the actual molarity of the Ba(OH)2 solution. Which method of analysis, equivalence point or gravimetric determination, was more accurate in your experiment. Why
You were given an unknown which gave precipiates with all four test solutions, 1 M H2SO4, 0.25 M (NH4)2C2O4, 1M K2CrO4 and 1M CH3COOH and 1M Na2CO3. Which of the four groups IIA metal cations are deffinitely absent from your unknown?
Show the chemical equation for this reaction. Explain FULLY why 2-methyl-2-hexene is the major product.
A solution of .601g of the solid in 34.1g of the solvent diphenyl gave a freezing point depression of 1.17 degree celsius. Calculate the molar mass and molecular formula of the solid(k1 for diphenyl is 8.00 degree celsius/m)
according to the law of conservation of mass if the products of a reaction have a mass of 64.0 grams then the total
SLIGHTLY LESS than 100 degrees Celsius, but the final boiling point was AT 100 degrees Celsius. Why should the boiling point rise as the distillation progresses?
It takes 51.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0 degrees celcius to 24.0degrees celcius What is the specific heat for the metal? Express your answer numerically, in Joules/gram Degrees celcius
how many grams of carbon dioxide are produced from the combustion of 250. g of ethanec3h8in the reaction
Given: H-H bond energy = 435 kJ, Cl-Cl bond energy = 243 kJ, and the standard heat of formation of HCl(g) is -92 kJ/mol, calculate the H-Cl bond energy.
Provide simple instructions for preparing 1.00 L of a solution having pH = 7.00 at 298 K. Your instructions should include the volumes of the solutions required. (1b) What is the buffer capacity of the resulting solution.
.20g of methyl alcohol, CH3OH, are dissolved in 16.8g of water, H2O. What is the mole fraction of the solute.
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