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A solution of benzene (C6H6) and toluene (C7H8) is 25% benzene by mass. The vapor pressure of pure benzene and pure toluene at 25 oC are 94.2 torr and 28.4 torr, respectively. Assuming ideal behavior, calculate each of the following: • (i) The vapor pressure of each component in the mixture. • (ii)The total pressure above the solution • (iii)The composition of the vapor in mass percent.
What is the concentration of HCl in the final solution when 65 mL of a 12 M HCl solution is diluted with pure water to a total volume of 0.15 L
One drop of 1N HCl is added to the stirred solution which is heated in a boiling water bath for 5 minutes. on cooling a precipitate is deposited which is collected and recrystallized in absolute alcohol. What is the product of this reaction
phosphoric acid is a commonly used biological buffer because the pka for dissociation of its second proton is near
One mole of an ideal gas cp =5r\2 in a closed piston is compressed from t1=298k p1=0.1 Mpa p2=0.25 Mpa by the subsequent pathways. For each compute du dh q w a)isothermal b ) constant volume c ) adiabatic I know how to solve the t2 please show all..
rate constant for the decomposition of N2O5 to NO2 and O2 at 70 degree celsius is 6.82 x 10^-3 s-1. Suppose we start with 0.300 mol of N2O5(g) in a .500L container. What is the half-life of N2O5 at 70 degrees celsius?
Problem- The first molecule of carbon dioxide is released from which of the following compounds in the citric acid cycle
Iodine-131 is a radioactive isotope. After 4.00 days, 70.8% of a sample of 131I remains. What is the half-life of 131I
Calculate the mass of nitrogen dissolved at room temperature in an 80.0 {rm L} home aquarium. Assume a total pressure of 1.0 {rm atm} and a mole fraction for nitrogen of 0.78.
A compound contains 44.26% carbon atoms, ,3.69% hydrogen atoms, and 7.79% fluorine atoms by mass. Each molecule of this compound contains one fluorine atom. What is the total number of carbon, hydrogen, and fluorine atoms in one molecule of this c..
Explain how the dislocations are involved in each of the three technics for strenghnening metals, explain the concept of steady-state diffusion.
Consider the titration of 25.0 mL of 0.0500 M Sn2+ with 0.100 M Fe3+ in 1 M HCl to give Fe2+ and Sn4+, using a Pt and calomel electrodes. (a) write a balanced titration reaction
inexperienced student reacted 3,3-dimethyl-1-butene with H2SO4/H2O. What major product was he surprised to isolate?
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