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A sample of supercritical carbon dioxide was prepared by heating 100.0 g of
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- Consider the Haber process: N2(g)+3H2(g)2NH3(g);H=91.8kJ The density of ammonia at 25C and 1.00 atm is 0.696 g/L. The density of nitrogen, N2, is 1.145 g/L, and the molar heat capacity is 29.12 J/(mol C). (a) How much heat is evolved in the production of 1.00 L of ammonia at 25C and 1.00 atm? (b) What percentage of this heat is required to heat the nitrogen required for this reaction (0.500 L) from 25C to 400C, the temperature at which the Haber process is run?arrow_forwardDefine the joule in terms of SI base units.arrow_forwardAn industrial process for manufacturing sulfuric acid, H2SO4, uses hydrogen sulfide, H2S, from the purification of natural gas. In the first step of this process, the hydrogen sulfide is burned to obtain sulfur dioxide, SO2. 2H2S(g)+3O2(g)2H2O(l)+2SO2(g);H=1124kJ The density of sulfur dioxide at 25C and 1.00 atm is 2.62 g/L, and the molar heat capacity is 30.2 J/(mol C). (a) How much heat would be evolved in producing 1.00 L of SO2 at 25C and 1.00 atm? (b) Suppose heat from this reaction is used to heat 1.00 L of the SO2 from 25C to 500C for its use in the next step of the process. What percentage of the heat evolved is required for this?arrow_forward
- When a 45.0 g sample of an alloy at 100.0 °C is dropped into 55.0 g of water at 25.0 °C, the final temperature is 30.4 °C. What is the specific heat of the alloy? The specific heat of H2O(l) is 4.184 J·g–1·°C–1. (A) 0.397 J·g–1·°C–1. (B) 0.447 J·g–1·°C–1. (C) 1.28 J·g–1·°C–1. (D) 1.55 J·g–1·°C–1.arrow_forward1. The enthalpy of vaporization of methanol is 37.4 kJ/mol at 25°C. Molar heat capacities for liquid and gaseous methanol are 81.6 J/mol K and 43.9 J/mol·K respectively. Assume that heat capacities are the constant in this temperature range. Calculate the enthalpy of vaporization at 50 °C.arrow_forwardFermentation of glucose produces ethyl alcohol and carbon dioxide;C 6H 12O 6(l) → 2 C 2H 5OH(l) + 2 CO 2(g)What is ΔH° rxn (in kilojoules) if 658.1 mL of CO 2 was collected over water at 12.00°C and 696.4 mm Hg? The vapor pressure of water at this temperature is 10.52 mm Hg. Species ΔH°f, kJ/mol C6H12O6(l) -1260 C2H5OH(l) -277.7 CO2(g) -393.5arrow_forward
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