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The density of toluene (C6H5CH3) at 25 °C = 0.862 g/mL, and its vapor pressure at 25 °C = 28.44 torr. At 25 °C, the vapor pressure of toluene above a solution of naphthalene (C10H8) in 500.0 mL toluene is found to be 27.92 torr. How many grams of naphthalene are present in the solution?
Compute the increase in entropy when 3.50 moles of an ideal gas is heated from 250 K to 700 K and simultaneously expanded
Complete combustion of methane When methane () burns, it reacts withoxygen gas to produce carbon dioxide and water. The unbalancedequation for this reaction is This type of reaction is referred to as a complete combustionreaction. PART A What coef..
Calculate the wavelength (in picometers) associated with hydrogen atom moving at a speed of 3.13 x 10^3 cm/s
What is the molar solubility of PbI2 in water? For PbI2, Ksp=7.9x10-9. You may assume that the ions do not form ion pairs in solution. Give your answer in moles per litre, accurate to two significant figures
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more com- plicated, but this is a reasonable ?rst ap proximation.)
A syringe filled with air can be used to test the relationship between the temperature and the volume of a sample of gas. The syringe has a movable plunger that allows an enclosed sample of gas to be held at a constant external pressure, so the ga..
A cell based on the reaction below has a standard potential of +0.42 V at 25°C. If all of the species are at standard conditions except [H+], at what pH will the cell have a potential of zero. H2O2(aq)+ 2 H+(aq) + 2 Cl-(aq)? Cl2(aq) + 2H2O(l)
How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 21.0 J/s?
A calibration curve was prepared from series of standards for various concentrations of this analyte and the line of best fit was determined to be S=1.56C + 0.2, where, S, is the signal in mV and, C, is the concentration in ppm (parts per million)..
A student starts with 55.0701 grams of iron (lll) nitrate nonahydrate, Fe(NO3)^3 * 9 H20 and dissolves this in 250 mL of water. This solution is diluted to the mark on a 500 mL volumetric flask.
Discuss solutions, solvents and solutes in relationship to water. One our last topic, discuss hypotonic and hypertonic fluids and why these impact cells.
Phosgene decomposes by the reaction COCL(g) CO(g) + Cl2 K2=8.3x10^-4 (at 360C) When 5.00 mol of COCL2(g) are placed in a 10.0 L flask, find the quilibrium concentration of COCL2, CO and CL2 using the follow steps
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