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A first order reaction has a half life of 26.4 sec. How long will it take for the concentration of the reactant to fall to 1/8 of its original value?
The boiling point elevation of an aqueous sucrose solution is found to be 0.39*C. what mass of sucrose molar mass 342.30 g/mol would be needed to dissolve in 500.0g of water? Kb (water) = 0.512*C/m
When a dilute solution of a weak base (Ka- 3.5*10^-9) is titrated with a 0.100 M solution of HCl at 25 C, the equilibrium constant for the titration reaction has this value:
The molar heat fusion of water is 6.01 kj/mol. How much heat energy is required to melt one ice cube in a soft drink to form liquid water at zero degrees Celsius, if the cube has a mass of 18.9 grams
What should be the concentration of the NaCl solution (in g/L) so that it will have the same osmotic pressure as the blood at 37 deg C
Explain the Coordination Chemistry and Chemical Speciation Utilized in the Analysis of Fluoride in Water Samples by Fluoride Ion-Selective Electrode
the average adult has about 16 g of sodium ions in her blood. assuminga total blood volume of 5.0 L, what is the molarity of Na+ ions in blood?
an ice cube of 15.1 grams is placed into 304 grams of h2o. compute the change in temperature in the h2o upon completing
Grams and centimeters in the metric system have been defined so that the density of water at 3.98 C is exactly 1. At 20 C, the density of water is 0.9982 g/ml. What percent error results from the assumption that the density of water is 1.000 g/ml ..
What are the concentrations of OH- and H in a 0.00054 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
Name a metal that could be used in a future experiment to extract the copper from the copper (II) nitrate solution
Describe how redox titrations are carried out and draw a labeled sketch of a typical redox titration curve.
Apart from the discrete energy values characteristic of a quantum mechanical system, is the result of an invidvidual measurement of the total energy identical to the result obtained on a classical system?
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