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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?
calculate the volume of oxygen you would need at 1.00 atm and 298 k to completely oxidize 54 g of
Decide whether or not a reaction will occur when a solution of Cadmium(II) Chloride is treated with nitric acid HNO3(aq). Write a balanced equation for any reaction that occurs.
Carbon Monoxide is a toxic pollutant found in our city air. On a particular day, the air contains 6.50mg of CO per 1.000X cubic meter of air. How many grams of CO are present in a room whose dimensions are 15.0 meters X 11.0 meters X 16.5 meters?
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 150.00 pm.
Phosphate systems form essential buffers in organisms. Calculate the pH of a buffer made by dissolving .8 mol of NaOH in .50 L of 1.0 M H3PO4
The pH of a 9.63×10-4 M solution of a weak base is 10.15. Calculate Kb for this base to three significant figures.
How many minutes will it take to plate out 16.22 g of Al Metal from a solution of Al^+3 using a current of 12.9 amps in an electrolytic cell
A voltaic cell is prepared in which aluminum metal is oxidized to Al3+, and nickel(II) is reduced to nickel metal. Which of the following represents the correctly balanced equation for this reaction
its freezing point depression constant is 8.37*C per molal. Use your corrected average temperature (5.0*C) to find the molality of the water in the alcohol. Find the percent water in the alcohol.
To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 23.0 L of 4.75 M acid to enough water to make 500. L. What is the mass of sulfuric acid per milliliter of the diluted solution
The overall reaction for the halogenation of a hydrocarbon (RH) using Br as the halogen is RH + Br2 > RBr + HBr. The following mechanism has been proposed for this process
A buffer is made by mixing HCN and KCN to give a solution whose pH is 9.49. If the KCN molarity is 0.20 M, what is the molarity of the HCN?
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