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by: Mrs. Kiara Medhurst

GeneralChemistry1 CHM121

Mrs. Kiara Medhurst
GPA 3.71


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Class Notes
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This 2 page Class Notes was uploaded by Mrs. Kiara Medhurst on Thursday October 29, 2015. The Class Notes belongs to CHM121 at Wright State University taught by DavidGrossie in Fall. Since its upload, it has received 16 views. For similar materials see /class/231124/chm121-wright-state-university in Chemistry at Wright State University.


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Date Created: 10/29/15
Significant figures All nonzero digits are signi cant Zeros between nonzero digits are signi cant Zeros to the left ofa measurement are not signi cant Zeros to the right ofa number after a decimal point are signi cant Zeros to the right ofa nonzero digit before the decimal point may or may not be significant Certainty may be accomplished by using scientific exponential notation In multiplying and dividing measurements an answer cannot have more significant digits than the measurement with the least number of signi cant digits used to arrive at that answer The result ofan addition or subtraction should be reported to the same number of decimal places as that ofthe term with the least number of decimal places Certain values such as those that arise from the de nition of terms are exact i e they have an in nite degree of precision ammonium acetate chlorate chromate dichromate hydrogen carbonate hydrogen sulfate hypochlorate nitrite permanganate phosphate sulfite Polyatomic Ions Positive Ions NH4 Negative Ions CgHsoz39 carbonate ClOs39 chorite CrO4392 cyanide Cr207392 dihydrogen phosphate HCOs39 hydrogen phosphate HSO439 hydroxide CIO39 nitrate N0239 perchlorate MnO439 peroxide Por3 sulfate 5032 thiosulfate mercuryl Hg2


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