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A radiation biologist studies the decomposition rate of a certain substance and obtains the given data as: Mass (μg) 26.00 17.71 12.06 8.22 5.60, Time (days) 0 4.0 8.0 12.0 16.0 consider this data and Determine the rate constant also explain how many mg will remain after thirty nine days?
A horse ate some ration that was equivalent to 4000. kJ. In this case assume that none of thatenergy was stored or used in the animal's body but that all of this energy was lost in the form ofperspiration
The mass of the water in the inner bath is 1.60×10^3 g . The temperature of the calorimeter and its contents rises 2.84K as a result of this reaction. 1)Calculate the calorimeter constant.
suppose that a fully charged lead-acid battery contains 1.50 rm l of 5.00 m rm h2so4. what will be the concentration of
An aqueous solution containing 34.1 g of an unknown molecular (nonelectrolyte) compound in 141.3 g of water was found to have a freezing point of -1.5 degrees C. Calculate the molar mass of the unknown compound.
determine the initial concentration - Constant rate is 3.20×10-4 M/s for a zero-order reaction. concentration has dropped to 9.00×10-2 M after 60.0 seconds
He later discovers that the percent carbon in 100 g of the solution is 12.10% by mass and consequently, determines that his solution is too dilute in sugar. What mass NaCl did the practical joker add to the container of sugar?
if you had 21 moles of oxygen and 8 moles of ethane, what is the most moles of carbon dioxide possible?
Given the standard free energies of formation, what is the value of for the cell reaction?
Tartaric Acid is a diprotic acid with ka1=1.0*10^-3 and ka^2=4.6*10^-5. Calculate the concentration of tartarate ion, C4H4O62-, present in 0.015 M aqueous H2C4H4O6 soultion
Given that the Ka of boric acid is 5.8x10^-10M, what is the pH of a 0.50M boric acid solution? Are there any good approximation available?
This reaction's half life is 35.0 at 680C. If you had 520 mmHg of phosphihne in an 8.00 L flask, how long does it take for the pressure in the flask to rise to standard pressure
A gas mixture contains H2 at 2/3 bar and O2 at 1/b bar at 298 K. The diameters of H2 is 0.272 nm and O2 is 0.360 nm. What is the collision frequency \(Z_{12}\) of a hydrogen molecule colliding with oxygen molecule
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