- Chemical Energy 1 (351.11 KiB) Viewed 119 times
Chemical Energy
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answerhappygod
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Chemical Energy
Chemical Energy
1. Using the following data: Measurement Result Mass of burner + ethanol before burning 73.38 g Mass of burner + ethanol after burner 73.14 g Mass of water heated 130 g 20 °C Temperature of the water before heating Temperature of the water after heating 33 °C a. Calculate the energy released by ethanol (CH3CH2OH) Show your working clearly b. Calculate the enthalpy of combustion of ethanol Show your working clearly 2. The bond dissociation energy of HF is 570 kJmol? In which of the following reactions is 570 kJ are released? А Hig) H2g) + 12F29) B HFG) Hg) + F) C 4H20• %F2(g) HF) D Hig) + Fo HF (O
1. Using the following data: Measurement Result Mass of burner + ethanol before burning 73.38 g Mass of burner + ethanol after burner 73.14 g Mass of water heated 130 g 20 °C Temperature of the water before heating Temperature of the water after heating 33 °C a. Calculate the energy released by ethanol (CH3CH2OH) Show your working clearly b. Calculate the enthalpy of combustion of ethanol Show your working clearly 2. The bond dissociation energy of HF is 570 kJmol? In which of the following reactions is 570 kJ are released? А Hig) H2g) + 12F29) B HFG) Hg) + F) C 4H20• %F2(g) HF) D Hig) + Fo HF (O