Dimensional Analysis.

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Presentation transcript:

Dimensional Analysis

Conversion Factors a ratio of equivalent measurements numerator = denominator See list

Conversion Factors exact quantities, so they have infinite sig. figs and should not affect the amount of sig. figs. you report in your answer

Dimensional Analysis a way to analyze and solve problems in chemistry using conversion factors

Your school club has sold 600 tickets to a chili supper. Your recipe serves 10 people. The recipe calls for 2 tsps. of chili powder. How many tsps. of chili powder is needed for 600. people?

Examples: Convert 8.50 in to cm

Examples How many quarters are in 5 dollars? How many inches are in 12.0 feet?

Multi-Step DA Recall the chili problem

Multi-Step DA A lab experiment required 7.5 dg of Magnesium per student. I have 100. Students. How many grams of Magnesium do I need?

Examples