For each of your three trials state the following: heat needed to melt the ice (q), enthalpy of fusion, and percent error from the accepted enthalpy of fusion of water of 334 J/g Trail 1: Heat needed: 22.0, Enthalpy of Fusion: 469 J/g, Percent Error: 29% Trail 2: Heat needed: 18.0, Enthalpy of Fusion: 399 J/g, Percent Error: 19% Trail 3: Heat needed: 20.0, Enthalpy of fusion: 376 J/g, Percent Error: 13% ((List three sources of error that could account for the differences between your values for the enthalpy of fusion of water and the accepted value of 334 J/g.)) (ONLY QUESTION THAT I NEED HELP WITH) What was your average percent error for all three trials? In this experiment you did three trials. Why was it suggested that you do three trials and not fewer? The average percent error was 20.3% In all experiments you should have more than one trial if you can. It helps make your data more accurate because if you do it once, but something went wrong, all of your data is wrong.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
For each of your three trials state the following: heat needed to melt the ice (q), enthalpy of fusion, and percent error from the accepted enthalpy of fusion of water of 334 J/g
Trail 1: Heat needed: 22.0, Enthalpy of Fusion: 469 J/g, Percent Error: 29%
Trail 2: Heat needed: 18.0, Enthalpy of Fusion: 399 J/g, Percent Error: 19%
Trail 3: Heat needed: 20.0, Enthalpy of fusion: 376 J/g, Percent Error: 13%
((List three sources of error that could account for the differences between your values for the enthalpy of fusion of water and the accepted value of 334 J/g.))
(ONLY QUESTION THAT I NEED HELP WITH)
What was your average percent error for all three trials? In this experiment you did three trials. Why was it suggested that you do three trials and not fewer?
The average percent error was 20.3% In all experiments you should have more than one trial if you can. It helps make your data more accurate because if you do it once, but something went wrong, all of your data is wrong.
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