CAS CH 102 Lecture Notes - Lecture 30: Significant Figures, Decimal Mark, Optical Spectrometer
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Formula iused for vaporization of condensation q = mhv (hv = 2260 j/g) Formula used for freezigng and melting q=mhf (hf = 334 j/g) Formula used for temperature change q = mc t (c = 4. 18) Measures all certain numbers and one uncertain number. Zeroes are not significant: exception is when the zeroes are after a decimal point, zeroes are significant if they are between 2 significant figures. Operations with significant figures: addition and subtraction. Hook at the digit that contains the lowest place value ,the sum of difference should be rounded to that place value: multiplication and division. The product or quotient of 2 numbers must have the name # of sig figs of the least amount of sig figs. King henry died monday drinking chocolate milk: king kilo, henry hetro, died deci, monday milli, drinking deci, chocolate centi, milk micro-
