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A solution is 0.40 mol % (C6H6) in carbon tetrachloride (CCl4) at 20 degree celcius. the vapor pressure of pure benzene at this temperature is 74.61 mmHg and the vapor pressure of pure carbon tetrachloride is 91.32 mmHg. if this solution is ideal, its total vapor pressure at 20 degree celcius is
A phosphorous acid buffer needs to be prepared to a pH of 5.92; given a 120mL solution of 25mM phosphorous acid, how many milliliters of either 0.5M KOH or 0.4M HCl will need to be added
In a reaction 82.00 g of sodium reacts with 74.00g of ferric oxide to form sodium oxide and iron metal. calculate the mass of solid iron produced
What steps do you think need to be taken to prepare the blood sample so that it will be amenable to this type of analysis?
If a sodium hydroxide solution is prepared by dissolving it in a volumetric flask and diluting to the line with mixing, will the level be on the line, below the line, or above the line on the following day?
Draw all of the eclipsed and staggered conformations for the c3-c4 bond in hexane starting with the conformation that has the lowest energy.
A certain gaseous oxide of sulfur has an effusion rate that is 0.707 times the effusion rate of oxygen gas. What is the most likely molecular formula of this oxide?
A student found that a maximum of 0.800g silver acetate is able to dissolve in 100.0ml of water. What is the molar solubility and Ksp for the salt?
How many joules of heat are required to heat 167 g of aluminum from 34.0 oC to 66.5oC?
what is the animals initial radiation exposure in curies? b) if all of the energy from the emitted alpha particles is absorbed by the animals tissues, and if the energy of each emission
Calcium carbonate reacts with dilute hydrochloric acid to produce the gas carbon dioxide. Write a symbol equation for the reaction.
Suppose the energy level of an electron with quantum number n was proportional to n instead of 1/n^2, E= -2.18 x 10^-19 J
To characterize the elution properties of the solute in a way independent of the geometry of the chromatographic column, the retention constant R = Vo / Ve is used. R is equal to the fraction of solute in the void volume Vo and
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