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An (aq) CaCl2 solution has a vapor pressure of 81.6mmHg at 50 degrees C. the vapor pressure of pure water at this temp is 92.5 mmHg. what is the concentration of CaCl2 in mass percent?
The VOA (Voice of America) broadcasts at 18.3 MHz for the Greenville Relay Station. What is the frequency and wavelength of the electromagnetic radiation and what is the energy of the photons and the speed of the electromagnetic wave
If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original mixture?
a 10.1 g sample of cacl2 is dissolved in 119 g of water with both substances at 25.0degc. calculate the final
assume that a particular process evolves 224 kj of heat and that 35 kj of pv work is done on the system at constant
Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, 14.0
1.500 g of Mg(s) was combined with 125.0 mL of 1.0 M HCl. The initial temperature was 25.0oC and the final temperature was 72.3oC.
You inherit a gold bar that measures 7.0 inches by 3.0 inches by 2.0 inches. How many ounces does the bar weigh?
The solubility of PbCl2 in .10M HCl is much lower than in pure water. CaC03 is an insoluble salt, but will dissolve in acid.
4.626g sample of hydrocarbon upon combustion yielded 6.484g of CO2, what is the % by weight of the carbon in the hydrocarbon
Draw a free energy profile for a reaction S to P that proceeds through a single transition state with Delta G knot equal to +2.8 kcal/mol and delta G double dagger equal to 14 kcal per mole. Label the appropiate difference.
How many glucose molecules does a fat cell, which has a diameter of 2.47 micrometers, contain when its internal glucose concentration is 1.47 mM
Describe how redox titrations are carried out and draw a labeled sketch of a typical redox titration curve.
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