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An underground storage tank was used to store toluene. Over a period of time some of the toluene leaked from the tank, contaminating the soil and groundwater below the tank. A subsurface investigation reveals that approximately 100 pounds of toluene remains in the vadose zone (above the water table). It is proposed to clean the soil by soil vapor extraction, in which air is drawn through the soil to vaporize the contaminant. Assuming the toluene behaves as a pure substance, estimate the minimum volume of air which would be needed to remove all of the toluen
Write the formulas that the following two elements will form, and state the type of bond present, and what properties are common in the bond types
During the cooling of the fired crucible, water condensed on the crucible wall before its mass measurement. Will the percent water in the hydrated salt be reported as being too high, too low or unaffected? Explain.
Explain what is the empirical formula of the compound. Combustion engage reacting with excess O2. Presume that all the carbon ends up in CO2 as well as all the hydrogen ends up in H2O. As well assume that all the nitrogen ends up in the NH3 in the..
Toluene is a liquid compound similar to benzene. Calculate the mole fraction of Toluene in a solution that contains 112 g Toluene and 221 g Benzene.
elemental sulphur occurs in the solid state as 8-membered rings arranged in rhombohedral crystal structure s8 which
Assume that O2(g) and H20(g) can be described by the van der Waals equation of state. Decide which between 1 mole of O2 and H20 has the highest pressure at the same value of T and V
A colorless liquid A (C3H6O) was soluble in water and ether, and had a boiling point of 94-96 degrees Celsius. It decolorized a Br2-CH2Cl2 solution and gave a positive ceric nitrate test
Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.
A solution was prepared by mixing 50.00 mL of 0.190 M HNO3 and 124.00 mL of 0.150 M HNO3. Calculate the molarity of the final solution of nitric acid.
What is the molality of ethylene glycol in an engine's cooling system to ensure the solution doent freeze in a "normal" winter. (minimun temperature of -10C)
How long (in seconds) would it take a 50.0 watt (1 watt=1 J/s) heater to melt 10.12 g of Au(s) initially at its freezing point (1064 degrees C) to the boiling point (2807 degrees C) and then to completely vaporize it
(The specific heats of ice, steam, and liquid are 2.03 J/g · °C, 1.99 J/g · °C, and 4.18 J/g·°C, respectively. The heat of fusion is 6.02 kJ/mol and heat of vaporization is 40.79 kJ/mol.)
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