need help 5. Use the molar heat of vaporization (44 kJ/mole) to determine the amount of...
Problem Solving: Show all work, units, sie fies and balanced equations needed to answer the following 1. To make the hydrogen necessary for the manufacture of ammonia in the Haber/Bosch process a steam reforming method is used. This method combines methane gas with steam (water gas) to make hydrogen gas and carbon monoxide gas. The AH for this reaction is + 206 kJ/mole. What amount of energy is needed to produce 1 kg of hydrogen? 2. Given: P.(s) + 3...
5) How much heat is required to warm 1.50 L of water from 25.0 °C to 100 °C? (Density of water = 1,0 g/mL for the water; Cs of water 4.18 J/g oC). Evaporating sweat cools the body because evaporation is an endothermic process which can be expressed using the following reaction: H20 (g) AHOxn +44.01 kJ H2O (I) Estimate the mass of water that must evaporate from the skin to cool the body by 0.5 °C. Assume a body...
You have a 1.08-mole sample of water at -33°C, and you heat it until you have gaseous water at 135°C. Calculate q for the entire process. Use the following data. Specific heat capacity of ice = 2.08 ) •c-1-1 Specific heat capacity of water = 4.18 •c-1g-1 Specific heat capacity of steam = 2.02 ºc-1 9-1 H20(s) → H20(1) H20(1)→ H20(9) AH fusion = 6.01 kJ/mol (at 0°C) AH vaporization = 40.7 kJ/mol (at 100°C) k] Need Help? Read It...
i need help with this a little bit. The standard molar heat of formation of water is –285.8 kJ/mol.b) Why is the magnitude of this value so much larger than the heat of vaporization of water (ΔH°vap = 41 kJ/mol)?Choose one:A. More energy is needed to break attractive forces between water molecules than to break H–H and O–O bonds and form H–O bonds.B. More energy is needed to form attractive forces between water molecules than to break H–H and O–O bonds and...
Need help finding the answers to number 14. heat change of solution and 17. molar heat of solution please show work both questions please neatly, the procedure says set up calorimeter with 25.0 ml of water I am not sure if thats the mass or not C. Molar Heat of Solution NaCl 2 NH CI NaOH 11. Temperature of water before (°C) 12. Mass of solid (g) 13. Temperature of water after (c) 14. Heat change of solution (cal) 15....
need help 4. Carlsbad Caverns have limestone formations called stalagmites and stalactites. These form when calcium lons react with bicarbonate ions to form solid calcium carbonate, water and carbon dioxide gas. Forming 1 mole of calcium carbonate performs 2.47 KJ of P.V work (at 1 atm and 298K) and also absorbs 38.95 KJ of heat from the surroundings. Use these values to determine AH and AE for the reaction. Write an equation for the process with the work and energy...
Need help with part B One possible use for the cooking fat left over after making french fries is to burn it as fuel. Formula = C_51 H_88 O_6 Density = 0.94g/mL Delta H^o_f = - 1310kJ/mol Write a balanced equation of the combustion of cooking fat. C_51 H_88 O_6(l) + 70 O_2 (g) rightarrow 51 CO_2(g) + 44 H_2 O(l) C_51 H_88 O_6(l) + 70 O_2 (g) rightarrow 7 CO_2(g) + 44 H_2 CO_3(l) C_51 H_88 O_6(l) + 48...
Parts iii) and iv) are the ones I need help with please :) (a) One mole of a monoatomic van der Waals gas obeys the equation of state and its internal energy is expressed as U where Cv is the molar apacity of an ideal gas. The gas is initially at pr isochoric heat c essure p and volume V Explain the physical meaning of the parameters a and b in the equation of state of the gas (ii) Write...
part a. The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 110 J of heat. As it expands, it does 79 kJ of work. What is the change in internal energy for the system? Express the energy in kilojoules to two significant figures. part b. When fuel is burned in a cylinder equipped with a piston, the volume expands from 0.235 L to 1.350 L against an external pressure of 1.02 atm...
could someone please help me with the calculations. im very confused 2. The heat of solution of 10 M H,SO Data Trail 1, Trail 2 222 22.1°C 23.0°C 22.8°C 31.500 / 630.0°c Initial temperature of IO MH,SO (10 mL in a graduated cylinder) Initial temperature of water in calorimeter 1 (90 mL deionized water) Final temperature of calorimeter 1 (90 ml water + added 10 mL H,SO) Triali Trial 2 Calculations (a) Temperature change of water in calorimeter 1 (ATC...