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A reaction has an activation energy of 110 kJ/mol and a rate constant, k=1.2 x 10^-12 s-1 at 0?C. At what temperature will the rate constant k=5.1 x 10^-7 s-1
what is the pH of the solution after the addition of 3.0 ml of HCl? e) What is the pH of the solution at the equivalence point? f) what is the pH of the solution when 5.0ml more of the HCl solution is added after the equivalence point has ben reac..
A sample of gas occupies 15.0 liters at 4.00 atmospheres and 300 K. What is the new volume of the gas if pressure is decreased to 2.00 atmospheres and temperature is increased to 400 K?
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 1.00 L of air under the stratospheric ozone conditions of 227 K temperature and 1.89 * 10^-3 atm pressure
if CO2 gas is collected over water at 25 degrees C and 775torr, what is the partial pressure of the CO2? The vapor pressure of water at 25degrees C is 23.8torr.
An electrochemical cell is constructed with a zinc metal anode in contact with a 0.052 M solution of zinc(II) nitrate and a silver cathode in contact with a 0.0042 M solution of silver(I) nitrate. What is the emf of this cell at 5°C
Petroleum is a fossil fuel containing many different carbon compounds. If the carbon atoms in petroleum have been in the ground for 325 million years
Traces of toxic, man-made hexachlorohexanes in North Sea sediments were extracted by a known process and by a new procedure, and measured by chromatography.
the gravitational force exerted on a solid object is given by F=mg, where F is the force in Newtons, m is the mass in kg and g is the acceleration due to gravity (9.81m/s^2)
The physical phenomenon that governs the shape of the Temperature/Reaction Completion Time curve is
A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil.
how long it will take the same ammount of gaseous I2 to effuse from the same container under identical conditions.
To a solution that is known to contain come of the soluble ions from group 1 and no other cations or inteferring substances, 12 drops of 6M hydrochloric acid is added and no precipoiate forms.To clear solution is evaporated to half its volume and ..
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