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Consider two different solutions of the same UV-absorbing compound. Upon UV-analysis Solution B provided an absorbance of 1.5 and Solution A provided an absorbance of .5 at the same wavelength. Solution B is higher in concentration by what ratio (or %)? Hint A= ε x c x 1.
Consider H2, D2, and H20, treated as ideal gases at pressures of 1 atm and temperatures of 293.2 K.
A 25.0 mL sample of 0.10 M sodium benzoate is titrated with 0.10 M HCl(aq). What is the pH after the addition of 32.0 mL of HCl(aq)? (Kb of C6H5CO2- = 1.6 ´ 10-10)
Which is the anode and which is the cathode of a concentration cell Au/Au^3+ , where the Au^3+ is 0.89 M in one half cell, and 0.14 M in the other. What half reactions occur at each
How much heat in Joules is required to raise the temperature of 1.000 kg of water by 60.0 oC? Cp,m (H2O) = 75.29 J mol-1 K-1. Molar Mass (H2O) = 18.015 g mol-1.
a particular household ammonia solution d 0.97 gml is6.8 nh3 by mass. how many milliliters of this solution should be
Mount Kilimanjaro has an altitude of 19350 ft. water boils at 81.0 c atop Mount Kilimanjaro. Explain what is the normal atmospheric pressure on the mountain
Order the four subshells with in a single shell from lowest to highest energy.
A swimming pool has a volume of 1.8 x 104 gallons. How many hours will it take to fill the pool if water is added at a rate of 3.9 gal/min
A diamond is forever is one of the most successful advertising slogans of all time. But is it true? For the reaction shown below, calculate the standard free energy change at 298 K and determine whether or not a diamond is forever
When copper(II) sulfate pentahydrate is heated, it decomposes to the dehydrated form the waters of hydration are released from the solid crystal and form water vapor. The hydrated form is medium blue, and the dehydrated solid is light blue.
An air stream's humidity is increased by combining it with a stream of water as shown below (hr stands for relative humidity). The water evaporates and increases the moisture content of the air stream. Determine the mass flow rate of stream B
which one of the liquids would you expect to have the lowest vapor pressure at room temperature?
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