CHEM 1151 Chapter Notes - Chapter 0: Significant Figures, Kilogram, Intensive And Extensive Properties

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M is always leftmost non-zero digit if no decimal point l is rightmost non-zero digit if decimal point l is rightmost digit count digits inclusively between m and. Y is character and reflects # of powers of ten that can be used to represent. Zzz is mantissa, represents the base ten number the answer must contain the same number of digits as are in the mantissa. Units of measure (symbol) length mass time temperature meter (m) kilogram (kg) seconds (s) kelvin (k) amount of a substance mole (mole) electrical current ampere (a) luminous intensity candela (cd) is decimal or metric-based. Prefix (symbol) multiplier mega (m) kilo (k) deci (d) centi (c) milli (m) micro () nano (n) pico (p) femto (f) atto (a) Exact numbers not numbers derived by making measurements which have an associated precision have infinite number of sig figs.