Measured vs exact chem
[DOC File]Experiment #5: Spectroscopy
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Known mercury wavelengths (Y) vs. measured Hg wavelengths (X). Remember that Excel requires “X” data in a left column and “Y” data in a right column. Use only the “Scatter Plot” option. Perform a trend line analysis of the data and display the straight-line equation and R squared value on the graph with 8 decimal place accuracy.
[DOC File]ChemMatters Teacher's Guide
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The Web site for “chem 1 virtual textbook” by Steve Lower (Simon Frazier University, Vancouver, Canada) contains a complete first-year general chemistry textbook. It contains lots of diagrams, as well as appropriate references to lectures on specific topics from the Khan Academy and other online references). ... If we measured the change in ...
[DOC File]Experiment 11 Electrochemical Cells and Thermodynamics
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Physically, a negative voltage reading means that you have connected the wrong electrode as cathode. This is equivalent to reversing equation (1). When equation (1) is reversed, the measured cell potential difference becomes . Eocell = - 1.10 V. The absolute value of ∆Eocell is the same in both cases, but the sign is different.
[DOC File]Chapter 01 Lecture Notes
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Exact Numbers vs Inexact Numbers. All numbers are not created equal. It is important to differentiate between numbers that are exact and numbers that are inexact. An exact number is a number that is determined by counting or by definition. For example, the number of students in a particular class section can be determined exactly by counting them.
[DOC File]Spectroscopy and Beer’s Law
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Calculate the concentrations of your known solutions 1 – 5. Using Excel, plot Absorbance vs. concentration on a half-page graph and draw the best-fit line (trendline) through the points, including zero. Determine the concentration of cobalt (II) nitrate hexahydrate in the unknown solutions using the equation for the line. Questions. 1.
[DOC File]Chem 2 Midterm Review Questions:
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The penny was measured using Vernier calipers. The diameter was 1.79 cm and the height was 0.13 cm. The penny was weighed and the mass determined to be 2.518 grams. The penny was cut and placed in excess hydrochloric acid. After the …
[DOC File]Chem 131A: pH and Buffers Experiment
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4. Take another 50 mL of this buffer and add acid or base to bring it to the exact assigned pH and calculate the miiliequivalents of acid or base needed for the 50 ml. 5. Take another 50 mL of your prepared buffer and add 0.2 M NaOH until the pH changes 1 …
[DOC File]Chemistry 212 Lab
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Remember, Ag+/Ag half-cell as the reference, assuming it to be the cathode, with a potential of Eored = + 0.80 V (+0.7993 V to be exact). Table 1. Determination of Reduction Potentials. Cell # Electrode 1 (Cathode) Reduction Electrode 2 (Anode) Oxidation Ecell (V) Measured Eocell, (V) Nernst Eocell(V) Standard 1 Ag Zn 2 Ag Cu 5 Zn Cu
[DOC File]Chemistry 101L - Home - Boyd County Public Schools
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4. Your laboratory grade is reported to your lecture instructor and is counted as ~25% of your grade for CHEM 101. Intellectual Dishonesty. I have seen a number of types of intellectual dishonesty in CHEM 101 Lab. These include: a. Falsified data - This is any report of results that is consciously different from what was observed. b.
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