dimenanal

dimenanal - start with and what you ultimately want; n Look...

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1 Dimensional Analysis-1 Problem Solving is more than ‘plug-and-chug’. In most cases we are simply converting from one measurement and its units to another (actually, this is all equations do!) This is known as DIMENSIONAL ANALYSIS Rule: if the units work out the answer will be correct! In DA we use Conversion Factors : An equivalence statement that links one quantity and its units to another quantity and its units 1 in = 2.54 cm 1 mole = 6.022 x 10 23 atoms Dimensional Analysis-2 n Determine the units of what you have to
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Unformatted text preview: start with and what you ultimately want; n Look for equivalence statements that link the unit(s) you have to those you want; n Write the equivalence statement in a ratio form so that unwanted units cancel (In DA we treat units like numbers. ..we can cancel, square, root, cube, etc them) n Link ratios to get correct units at end; Dimensional Analysis-3 n Do the math CAREFULLY; n Check Sig Figs at end, rounding if necessary; n DOES THE ANSWER MAKE SENSE???...
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This note was uploaded on 01/30/2012 for the course CHEM 6A taught by Professor Pomeroy during the Spring '08 term at UCSD.

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