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A photometer with a linear response to radiation gave a reading of 625 mV with a blank in the light path and 149 mV when the blank was replaced by an absorbing solution.
Calculate: a) The percent transmittance and absorbance of the absorbing solution.
b) The expected transmittance if the concentration of absorber is one half that of the original solution.
c) The transmittance to be expected if the light path through the original solution is doubles.
Calculate the vapor pressure of this solution at 25.0 degrees C. At this temperature, the vapor pressure of pure water is 23.8 mmHg.
what is the percent composition of the air mixture in the scuba tank
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Problem- If the heat of vaporization of ammonia (NH3) is 22.3 kJ/mol, and its boiling point is -30.0oC, what is the entropy change for the vaporization of ammonia from its liquid
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The reaction between ethyl iodide and hydroxide ion in ethanol (c2h5oh) solution, c2h5oh + oh --> c2h5oh + I, has an activation energy of 86.8 kj/mol and a frequency factor of 2.1 x 10^ 11
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A sample contains Ba3(PO4)2, CoS, AgCl, NH4Cl, and ZnS. Identify the precipitate after the addition of 6 M HCl, then H2S and 0.2 M HCl.
Glucose is a main energy-yielding nutrient for most cells. Presuming a cellular concentration of 1 mM, compute how many molecules of glucose would be present in our hypothetical as well as spherical eukaryotic cell. Avogadro's number, the number o..
An equilibrium mixture for the reaction above contains [H2] = 1.00 M, [N2] = 1.50 M, and [NH3] = 2.00 M. What is the value of the equilibrium constant, Kc, for the reaction?
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