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Define a 100ml sample of water is taken from the Pacific Ocean, as well as the water is allowed to evaporate. The salts that remain mostly NaCl have a mass of 3.85g. Compute the original concentration of NaCl in g per liter in the water sample.
in a test on the vaporization of water into air in a wetted-wall column the following data were obtained tube diameter
Radio wave radiation falls in the wavelength region of 10.0 to 1.00E+3 meters. What is the frequency of Radio wave radiation that has a wavelength of 426 m.
Briefly describe experiments and expected outcomes to differentiate whether this inhibitor is a competitive inhibitor or a mixed inhibitor.
When you initially standarized your NaOH sollution, you diluted your HCl stock solution and added water to it. If you used 24.8 ML of 0.18 M HCl stock solution and added another 26.2 mL of water, what is the new molarity of the acid
What is the freezing point in of a solution prepared by dissolving 4.80 of in 110 of water. The value of for water is 1.86 , and the van't Hoff factor for is = 2.7.
if 5.00g helium gas is added to a 1.00-L ballon cantaining 1.00g of helium gas, what is the new volume of the ballon?
a common rule of thumb taught to engineers inthe recent past was that raising the temperature 10cfor many reactions
Zinc hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Zn(OH)2 Zn2+ + 2 OH- b. its possible to dissolve significant amounts of Zn(OH)2 in solutions in which the concentration of either Zn2+ or OH- ..
The molecular weight of X is 65.0 g/mol. The heat required to melt one mole of the solid phase is 20.0 kJ, the heat required to sublime one mole of the solid phase is 40.0 kJ, and the heat required to vaporize one mole of the liquid phase is 30.0 ..
The temperature of the calorimeter and its contents increases from 20.00 C to 23.69 C. What is the heat capacity of the calorimeter (J/C)
If the decay of trihalomethane is first order,and 90% of the trihalomethanes in glass of tap water are gone after 3 hours, what is the decay rate constant
calculate the apparent degree of dissociation of the nh4cl if the freezing point of this solution is -15.3oc?molal
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