Rec1_f04 - Recitation Activity 1 (Chem 121) Significant...

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Recitation Activity 1 (Chem 121) Chapters 1 & 2 1. How many significant figures are there in the following numbers: a. 75.1 b. 7.510 × 10 1 c. 0.03400 d. 125,000 2. Carry out the following calculations and express the answer using the correct number of significant figures. Use scientific notation as appropriate. a. 186.25 + 3.2 b. 661/0.0021 c. (44)(0.034) + (5.226)(2.2511) 3. What’s the point of significant figures anyway. Consider the following example from the world of finance. Let’s say you took $5,000 (or $5.000 × 10 3 to be precise) and invested it in the stock market instead of using it on tuition (this would not have been a bad idea for some students in this class, statistically speaking of course). If you bought Hitachi stock, which is very volatile right now, at its rolling year long low ($40.95) and sold at its 52 week high ($81.35), how much money would you have made? Now, if your broker lied to you and said that stocks prices were only recorded to
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This note was uploaded on 07/17/2008 for the course CHEM 121 taught by Professor Wyzlouzil during the Fall '07 term at Ohio State.

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Rec1_f04 - Recitation Activity 1 (Chem 121) Significant...

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