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441.5 ml of heptane (C7H16) is mixed with 811.4 ml of octane (C8H|8) to form an ideal solution at 30°C. The densities of heptane and octane at 30°C are 0.6795 and 0.7025 g/ml respectively. At 30°C,the vapour pressure of heptane is 0.121 atm and vapour pressures of octane is o.o41atm.What is the total vapour pressure of the solution ?What is the mole fration of heptane in vapour above this solution?
sketch the phase diagram for co2 using the following data triple point 216.8k and 5.11atm critical point 304.2k and
A reaction vessel contains 13.9g of CO and 13.9g of O2. How many grams of CO2 could be produced according to the following reaction? 2CO + O2 ---> 2CO2
Suppose the volume of this system is compressed to one-half its initial volume and then equilibrium is reestablished. what would be the new equilibrium total pressure.
When conducting recrystallization, the recrecrystallizing solvent must have certain characteristics (in terms of how its acts on the target sample and the contaminants)
An object made of aluminum has a mass of 8.37g. When it was placed in a graduated cylinder containing 20.0mL of water, the water level rose to 23.1mL. Calculate the density and specific gravity of the object.
Classify the reaction type : combination , combustion, decomposition , single displacement, or double-displacement
Helium has a lower boiling point than nitrogen. What do you conclude about the polarizability of helium in comparison to that of nitrogen
How many molecules of NH3 do you have when you have 2.6 moles of NH3. How many moles of water do you have when you have 1.12 x 10 26 molecules of water
A voltaic cell made of a Cr electrode in a solution of 1.0 M in Cr^3+ and a gold electrode in a solution that is 1.0 M in Au^3+.
A 65.00 mL sample of HNO3 solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)2. What is the molarity of the HNO3 solution?
Using the Henderson-Hasselbalch equation, calculate the pH of an ammonia buffer when the NH3:NH4+ ratio is 0.4 moles:0.6 moles. (pK = 9.75). Please explain and will rate lifesaver.
Define nucelophilicity. Give a detailed explanation as to why hydroxide is a much better nucleophile than water.
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