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Assume that a particular reaction evolves 241 {rm kJ} of heat and that 33 {rm kJ} of PV work is gained by the system.
What are the values of Delta E and Delta H for the system? For the surroundings? Delta E and Delta H.
When 0.100g of graphite is burned completely in a bomb calorimeter(heat capacity =3.344kJ/?C), containing 3000 g of water, a temperature rise of 0.21?C is observed.
Consider a substance X with a Hvap = 20.3 kj/mol and Hfus = 9.0 kj/mol. The melting point, freezing point, and heat capacities of both the solid and the liquid X are identical to those of water
If 116g of butane burns in the presence of 320g of oxygen how much carbon dioxide will be produced
If the initial concentration of N2O4 is 0.50 M, and no NO2 is initially present, what is the equilibrium concentration of N2O4? Kc = 0.0059 at 298 K N2O4 (g) 2NO2 (g)
When 5.0 g of an unknown compound is dissolved in 200.0 g of carbon tetrachloride, CCl4, the freezing point of the solution is -31.8 degC. The freezing point of pure carbon tetrachloride is -22.3degC
Assume a density of 1.08g/mL for the solution. A)Find molarity of solution B)Find molality of solution C)Calculate mass percent of solution
Aluminum nitrate and ammonium chloride react to form aluminum chloride, nitrogen, and water. what mass of aluminum chloride is present after 74.7 g of aluminum nitrate and 56.8 g ammonium chloride have reacted completely.
Sodium chlorate,NaClO3, decomposes when heated to yield sodium chloride and oxygen, a reaction used to provide oxygen for the emergency breathing masks in many airliners
Calculate the molar solubility of strontium chromate in water at 298 K if Ksp = 3.6 * 10-5.
If 0.214 mol of argon gas occupies a volume of 652 mL at a particular temperature and pressure, what volume would 0.375 mol of argon occupy under the same conditions?
The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?
Using a sample of gas has a mass of 38.7mg. Calculate the molar mass if its volume is 228mL at a temperature of 57°C and a pressure of 832torr?
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