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A certain reaction has an activation energy of 63.0kJ/mol and a frequency factor of A1= 7.80×1012 . What is the rate constant, k, of this reaction at 25.0 C ? Express your answer with the appropriate units. Indicate the multiplication of units explicitly either with a multiplication dot (asterisk) or a dash
How much heat (in kJ) is evolved in converting 1.00mol of steam at 130.0C to ice at -50.0C? The heat capacity of steam is 2.01 and of ice is 2.09 .
Show the reaction energy diagram of two competing reactions, A & B and A & C, for which the kinetic product (C) is different from the thermodynamic product (B). Both reactions follow a one-step mechanism.
what is the molality of ethanol in a solution made by dissolving 14.6g of ethanol, C2H5OH, in 53.6 g of water?
A certain solid metallic element has a density 7.87 g/cm3 and a molar mass of 55.85 g/mol. It crystallizes with a cubic unit cell, with an edge length of 286.7 pm. calculate the number of atoms per unit cell.
Determine the percent yield for the reaction between 45.9g of NaBr and excess chlorine gas to produce 12.8g of NaCl and an unknown quantity of bromine gas.
calculate the molality, molarity, and mol fraction of HF in a solution made by dissolving 5.0g of HF in 250g of water
suppose .853L of H2 is collected at 15 degrees celcius and 782 mmHg. how much electricity in coulombs must have passed through the solution
Ultra-high-vacuum experiments are routinely performed at a total pressure of 1.0x10^-10 torr. Calculate the mean free path of N2 molecules at 350K
When 2.20 grams of Cr(CO)6 reacts according to the following equation at 400 °K in a closed system the temperature goes down and 5.2 kJ of hear is absorbed
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.
Complexometric titration and stoichiometry - How many grams of chloride ion were present in sample
Consider a rigid, adiabatic, impermeable cylinder (i.e., a closed isolated system) that consists of two chambers (i.e., simple systems) that are separated by a wall that is permeable
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