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EXPERIMENT 2: ELECTROCHEMISTRY - GALVANIC CELLSAccuracy of EquipmentConstantsError AnalysisSignificant FiguresTotal Points =Earned Total3234Lab Data:The data you collected in lab may be entered in groups or as a single entry. Once a 'data group' opensup, enter data in every open text box before clicking the Submit button in the side panel. Once you Submit andConfirm your lab data, click the Next Problem button to proceed down the page where you can enter answers tolab calculations, essays, balanced equations, and multiple choice questions.If you Submit / Confirm incorrectdata,you can correct your data with the Change Incorrect Data link at the top of this page.Note: If you change / reset your data the program remembers any points you lost on calculations using theincorrect data and deducts those points from your total grade.Calculations:When you enter answers to calculations, you must pay attention to the tolerances established byyour Instructor which the program uses to grade your answer. If you are expected to round your answer to thecorrect number of Significant Figures, you will be notified in the side panel; otherwise, you need only enter anumber that falls between the correct number minus the tolerance and the correct number plus the tolerance. Thetolerance for any Chem21Labs calculation is found in the side panel once you open a calculation by clicking theNext Problem button. If the Tolerance is ± 2 in 3rdSF, it means that if your answer falls between the correct answerminus 2 in the 3rdSignificant Figure AND the correct answer plus 2 in the 3rdSignificant Figure, Chem21Labs willcount it as correct. In this example, the '3rdSF' is the MINIMUM number of significant figures required for theanswer. If the tolerance is not ± 0 in a certain Significant Figure, it is recommended that you use two moreSignificant Figures than required as long as your answer is within the range created by the tolerance.Enter onlythe number for Lab Data and Calculations - never the unit.Essays:short answers to questions can be entered at any time by clicking the Edit link associated with thequestion. If you don't click the link, the essay editor will open automatically after clicking the Next Problem buttonif it is next in the "sequence".If you "click ahead" in the lab to enter essay answers, the Next Problem buttonmay not open a previous data box or calculation box - you can fix this by reloading the page or clicking the BacktoMainMenulinkandclickingontheassignmentagain.
To use scientific notation you will use theEnotation. For example, 4.5 x 10-3