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## Chemistry 111

by: Elizabeth Riggin

5

0

3

# Chemistry 111 CHEM 111 (Section 34)

Elizabeth Riggin
BSU

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Math Review
COURSE
General Chemistry 1
PROF.
Jeffery W. Pavlik
TYPE
Class Notes
PAGES
3
WORDS
CONCEPTS
Math
KARMA
Free

## Popular in Biomedical Sciences

This 3 page Class Notes was uploaded by Elizabeth Riggin on Tuesday September 6, 2016. The Class Notes belongs to CHEM 111 (Section 34) at Ball State University taught by Jeffery W. Pavlik in Fall 2016. Since its upload, it has received 5 views. For similar materials see General Chemistry 1 in Biomedical Sciences at Ball State University.

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Date Created: 09/06/16
Chemistry Algebra Review/Rules Rules: Example: −n 1 −3 1 1 a = an 3 = 33=27 1 n −2 1 1 a−n = a 8 = 82= 64 1 =2 =16 2−4 Complex fractions −7.5 without variables Example: 4 3 4 4 1 1 8 = 38= ⋅3 8 6 4 7 4 6 24 7 =4÷ 6 ⋅1 7 7 6 5 6 5 3 5 8 20 = ÷ = ⋅ = 3 6 8 6 3 9 8 Evaluating an expression with a negative exponent. Rule: Example: −n n n −1 1 1 a = b = b 8 = 7 = 7= 7 (b () a an (7 () 8 8 8 3−3 5 3 53 125 (5 () 3 = 33= 27 Signed fraction addition or subtraction Example: −1 5 8 1 5 3 −8 15 7 3 + 8 (8 −3 8⋅ (3= 24 24 = 24 −1 7 −4 7 11 2 − 8 8 − 8 8 Signed fraction division Example: −5 25 5 18 −3 12÷ 18= 12 25= 10 Converting between decimal numbers and numbers written in scientific notation Example: 2 375.1=3.751×10 Multiplying numbers written in scientific notation Example: (−1.5×10 )(5.0×10 )=−7.5×(10 ×10 )=−7.5×10 7 −2 7+(−)=−7.5×10 5

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