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Suppose you have been given the task of distilling a mixture of hexane + toluene. Pure hexane has a refractive index of 1.375 and pure toluene has a refactive index of 1.497. You collect a distillate sample which has a refractive index of 1.391. Assuming that the refractive index of the hexane + toluene mixture varies linearly with mole fraction, what is the mole fraction of hexane in your sample?
Strontium metal crystallizes in a cubic unit cell which has an edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr metal is 2.54 g/cm3.
Determine the PH of each of the following a) 10mL of .2M Acetic acid and 1.00mL of .1M sodium hydroxide, and 9.0 mL of distilled water
"A student titrated a 10 mL sample of a saturated solution of borax. If the titration required 23.95 mL of 0.2556 M HCL to reach the endpoint, calculate the equilibrium molar concentration of B4O5(OH)(4 in the saturated solution"
calculate the mass of Cl2 consumed if the battery delivers a constant current of 853 A for 28.0 min.
Calculate the pH of the solution at the half equivalence point. Explain how the pH at the half equivalence point is related to Ka for the weak acid.
if the molarity of the HCl solution was actually greater then the lable indicated would it affect the calculated value for the number of moles of HCl that reacted.
How many moles of H+ are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned above? What is the normality of solution mentioned above? How many H+ ions are present in 1.000 mL of this solution?
Consider the reaction when aqueous solutions of sodium sulfide and manganese(II) sulfate are combined.
Calculate how wide is the cloud of organisms at the time peak concentration takes place at the intake pipe.
When 2-bromopropane reacts with ethoxide ion, two products are formed; one is the product of Sn2 substitution and the other is the product of E2 elimination.
Maleic anhydride reacts with ethylene glycol to produce an alkyd resin
The human body obtains 1091 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized? (Assume that the density of water is 1.0 g/mL.)
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