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The rate constant of a first-order reaction is 4.60x10^-4 at 415C. If the activation energy is 104 kJ/mol, calculate the temperature in C at which its rate constant is 8.80x10^-4 s^-1.
If 5.0 g of H2 are reacted with excess CO, how many grams of CH2OH are produced, based on a yield of 86%?
The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr2(SO4)3 is 1.64 mol/min at a particular moment, what is the rate of disappearance of..
Then 5.0mL was withdrawn and diluted to 200mL. The spectrum of this solution exhibited a maximum absorbance of 0.642 units at 554nm in a 2cm cell. The molecular absorbance , e, is 423 M-1cm-1. What is the mass of the analyte in grams
what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
A 0.5220 g sample of an unknown monoprotic acid was titrated with 9.98×10?2 M NaOH . The equivalence point of the titration occurs at 23.70 mL. Determine the molar mass of the unknown acid.
You are the Science Officer on the Starship Enterprise and you come across a new planet. You find that no light with wavelength less than about 650 nm reaches the surface of the planet.
calculate the value of Keq at 298 K for each of the following reactions
A sparingly soluble salt gets precipitated only when the product of concentration of its ions in the solution (Qsp) becomes greater than its solubility product. If the solubility of BaSO4 in water is 8 × 10-4 mol dm-3, calculate its solubility in ..
If the reaction is allowed to proceed until all substances have reached their equilibrium concentrations, determine delta G for the reaction.
Calcium hydroxide reacts with carbon dioxide to form calcium carbonate. The reaction for this process is: Ca(OH)2(s) + CO2(g) ? CaCO3(s) + H2O(g), ?H = -69.1 kJ What is the enthalpy change if 380 g of calcium carbonate is formed
If a reaction mixture initially contains 443 of and 391 of , what is the mole fraction of when equilibrium is reached.
Going off of what our teacher was saying about the concept that a system's attempt to establish equillibrium is the true driving force of all chemical processes.
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