Check Test # 1 Scientific Notation Professor Larry Byrd

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Presentation transcript:

Check Test # 1 Scientific Notation Professor Larry Byrd Department of Chemistry Western Kentucky University Scientific Notation Check Test # 1

Check Test #1 Good Luck !

If your instructor requires you to do so, “TYPE” or “PRINT” each of the following questions. If you PRINT, you must use a Number # 2 Pencil. You must first write the Question and then “Show Your Work” for each part under each question and then move to the next part. If it is a mathematical problem, you must show the equation, substitute and then work it out showing every needed step. You “CANNOT” do any work in your head. This means you must show every step with its needed step.

96,000,000 (as two significant figures) 1. Give the following in scientific notation. Also, write each in correct scientific notation computer form! 648 = ? 0.00162 = ? 96,000,000 (as two significant figures) 30,000,000,000 x 10-4 (as one significant figure) 0.00468 x 10-3 (as three significant figures) 94.6 x 10-4 (as three significant figures)

2. Convert the following into a conventional numbers 2. Convert the following into a conventional numbers. If part of the number is in scientific notation from, then you must get the final value in correct scientific notation form before converting into a conventional number. a. 7.82 x 10-4 9.34 x 103 c. 0.00381 x 10-2

3. Use scientific notation to work the following problems: "Do" all work in scientific notation! Give "ALL" answers in scientific notation! a. (6.20 x 10-2) (3.00 x 10-1) = ? (answer as 3 significant figures) b. (0.514 x 10-3) (4.20 x 103) (answer as 3 significant figures) c. (124,000) (48.1) (12.0) (1.00) (answer as 3 significant figures)

3. Use scientific notation to work the following problems: "Do" all work in scientific notation! Give "ALL" answers in scientific notation! d. (87.6) ( ) = ? (answer as 2 significant figures) e. 4.00 x 104 divided by 2.00 x 103 (as 3 significant figures) f. 68.0 x 10-3 (as 3 significant figures) 4.61 x 10-1 2.0 684

3. Use scientific notation to work the following problems: "Do" all work in scientific notation! Give "ALL" answers in scientific notation! g. (6.20 x 10-3) (3.00 x 104) ( ) (as 3 significant figures) h. [ ] [16.4 X 10-7] [ ] (as 3 significant figures) 1.00 4.20 x 10-1 10.6 x 10-4 0.0641 x 10-2 0.111 x 104 10.0 x 102