CHEM 1001 Lecture Notes - Lecture 1: Decimal Mark, Molar Mass, Significand

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CHEM 1001 Full Course Notes
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CHEM 1001 Full Course Notes
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Standard notation (all values: the standard notation includes actual numbers in its entirety. 0. 000 000 000 000 000 000 000 000 000 000 910 9 kg. Exponential notation: considering standard deviation there are two components; The significand (mantissa: the non-zero portion. The exponent: the power of 10 by which you multiply the mantissa to give the whole value. Exponent: 10^5 - therefore the exponential notation is 2998 x 10^5. Scientific notation: the significand must be >1 and <10. 0. 000 239 = 2. 39 x 10^-4 number becomes smaller. 239 0000 = 2. 39 x 10^5 number becomes larger. Trailing zeros: any zeros left behind the significand. The idea is to reduce all of the zeros after the significand. The difference between the exponential and scientific notation is the placement of the decimal point (scientific has only one digit before the decimal point). Significant figures: the amount of digits that are considered significant in a final value.