How many minutes does it take for concentration of reactant
A certain first-order reaction (A->products) has a rate constant of 6.60×10-3 s^-1 at 45 C. How many minutes does it take for the concentration of the reactant, [A] , to drop to 6.25 % of the original concentration?
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What mass of sucrose should be combined with 537 mL of water to make a solution with an osmotic pressure of 8.55 atm at 290 K ? (Assume the density of the solution to be equal to the density of the solvent.)
Based on the average number of moles of IO3- in your samples, and the initial volume of those samples, what is the solubility of Ca(IO3)2 in mol/L of the saturated solution in pure water?
The partition coefficient between ligroin and water for solute A is 4. What weight of A would be removed from a solution of 12 g of A in 100 mL of water by a single extraction with 100 mL of ligroin?
Find the heat of combustion in kJ/g for each gas. These values are valid at 25°C, where the water produced by the reaction is in the liquid state.
What is the pressure exerted onto the closed end of an apparatus if the atmospheric pressure is 720 torr and the height of the water is 22.3 cm?
If the temperaure changes from 22.0oC to 275oC and the specific heat of aluminum is .900 J/goC, how much energy, in J, was required?
The density of liquid water at 0 degrees celsius is 0.9987 grams per centimeter cubed; the density of ice at the same temperature is 0.917 grams per centimeter cubed. calculate the volume of both at 0 degrees celsius and 100 grams.
A student wants to dissolve the maximum amount of CaF2 (Ksp = 3.2 * 10^-11 ) to make 1 Liter of aqueous solution. a) Into which of the following solvents should she dissolve the salt ?
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