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Question 5 5 pts How much heat will be released when 350 g NH3(g) changes from...
How much heat is released when 15g of ice is heated from -12 °C to water vapor at 105 °C? (AH fus = 79.5 cal/g, AH vap = 539 cal/g) Substance Specific Heat (cal/g °C) 1.00 Water (liquid) Water (gas) Water (solid) 0.497 0.490
How much heat, in kilojoules, is released when a 67.35 g sample of cesium metal is cooled from 725 °C to 335 °C? Potentially Useful Information for cesium: Melting Point (°C) 28.5 Boiling Point (°C) 671 s(s) (J/g·°C) 0.242 s(l) (J/g·°C) 0.177 s(g) (J/g·°C) 0.157 ΔH°fus (kJ/mol) 2.087 ΔH°vap (kJ/mol) 74.4 Please show a heating curve diagram
How much heat is absorbed/released when 20.00 g of NH3(g) reacts in the presence of excess O2 (g) to produce NO (g) and H2O (l) according to the following chemical equation? 4NH3 (g) + 5O2 (g) ---> 4NO (g) +6H2O (l) Δ H: +1168 kJ a. 342.9 kJ of heat are absorbed. b. 342.9 kJ of heat are released. c. 1372 kJ of heat are absorbed. d. 1372 kJ of heat are released. Please explain your answer.
Determine how much heat is needed to warm up 10.0 g of ammonia, NH3, from -50.0°C to 0.00°C. The table below lists information about ammonia that will help you solve the problem. Show all your work. Melting point = -77.73°C Boiling point = -33.4°C AHfus = 5.653 kJ/mol AHvaa = 23.35 kJ/mol Cn(liquid ) = 37.0 J/mol.K Cn(gas) = 80.8 J/mol-K
Energy 4. (3 points) How much heat is released when 150.0 g of copper cool down from 70.1°C to 22.3"C7 Specific hest capacity of copper is 0.385 g"C. 5. (3 points) During combustion of acetylene, CHą, according to the reaction below 1299 kJ are released: C Hz + 5/20, 200, + H2O AH = -1299 kJ How much energy is liberated when 100.0 of acetylene combust? 6.3 points) Given the following equations and AH values, determine the heat of reaction...
1) The heat of combustion for n−heptane, C7H16, is 4,817 kJ/mol. How much heat is released if 350 kg of this liquid burns completely? 2) The heat of combustion for ethane, C2H6, is 47.8 kJ/g. How much heat is produced if 7.0 moles of ethane undergo complete combustion?
How much heat (in kJ) is released when 125.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.4 J/(mol ∙ °C), and the molar heat capacity of ice is 36.4 J/(mol ∙ °C).
How much heat is released when 105 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.4 J/(mol • °C), and the molar heat capacity of ice is 36.4 J/(mol • °C). A)347 kJ B)54.8 kJ C)319 kJ D)273 kJ
How much heat is absorbed/released when 30.00 g of NH3(g) reacts in the presence of excess O2(g) to produce NO(g) and H2O(l) according to the following chemical equation? 4 NH3(g) + 5 O2(g) ? 4 NO(g) + 6 H2O(l) ?H° = 1168 kJ
how much heat is released when 10.0 g of steam (water vapor ) at 105.0 C is cooled to liquid water at 25 C? S(water) = 4.18 J/g.C. ... S(steam) = 2.01 j/ g.C the heat of fusion of water is 6.02 KJ/ mol. The heat of vaporization of water is 40.7 KJ/mol