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Toluene is mixed with air at 21°C in such proportions that the partial pressure of thevapor is 1.33 kPa. The total pressure is 99.3 kPa. Calculate the following:
(a) The relative saturation.
(b) The moles of toluene per mole of vapor-free gas.
(c) The weight of toluene per unit weight of vapor-free gas.
(d) The percent saturation.
(e) The percentage of toluene by volume.
The normal melting point of benzene is 5.5 degrees Celsius . For the process of freezing, what is the sign for each of the following
Calculate the pH of rainwater in equilibrium with SO2 in a polluted air mass for which the sulfur dioxide concentration is 1.0 ppm.
Explain a compound contains only carbon, hydrogen and oxygen. Combustion of 0.01068 g of the compound yields 0.01601g CO2 as well as 0.00437g of H2O. The molar mass of the compound is 176.1g/mol. Define what are the empirical and molecular formula..
a solution is prepared by dissolving 15.2 g ammonium sulfate in enough water to make 100.0 ml of stock solution. a
The density of lead is 11.3 g/ml. The water level in a graduated cylinder initially at 220mL rises to 297mL after a piece of lead is submerged. What is the mass in grams of the lead?
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH: (a) hydrobromic acid (HBr), (b) chlorous acid (HClO2), (c) benzoic acid (C6H5COOH)
Calculate the percent relative error for the three solutions if perfect technique is used. Report the two new molarities. (The error in a 10-mL transfer pipet is 0.02, and the error in the 200-mL volumetric flask is 0.1)
When a mixture of 15.0g of acetylene (C2H2) and 15.0g of oxygen gas is ignited, the resultant combustion reaction produces carbon dioxide and water.
An equilibrium mixture contains N2O4 , (P= 0.27 ) and NO2 (P= 1.0 ) at 350 K . The volume of the container is doubled at constant temperature.
What is the pH halfway to the equivalence point for the titration of 0.20 M CH3NH2 with 0.20 M HCl? (Kb of CH3NH2 = 4.4 x 10-4)
The following data were obtained on the rate of lactose decomposition as a function of acid and lactose concentration. Using this information, determine the rate law expression and the value of rate constant for the acid-based hydrolysis of lactos..
1. Write all of the resonance structures for m-bromonitrobenzene. 2. Write all of the resonance structures for o-bromonitrobenzene.
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