# Shared Flashcard Set

## Details

Pharmacy Calculations
Self-Study
9
Pharmacology
Professional
08/25/2013

Term
 What is a ratio   what are like numbers
Definition
 the relative magnitudes of two like numbers   In story problems, like numbers are numbers with the same units
Term
 Define the relationship between two amounts   when can it be used
Definition
 simple related terms have numerical values units   can be used to construct conversion factors and proportions
Term
 What are direct proportions   what can be directly proportional
Definition
 as one value doubles, an associated value double   ratios or related terms
Term
 what are inverse proportions? 2   what is one example of this? explain
Definition
 less common than direct proportions   as one value goes up, the related value goes down ----- Dilutions:  when we dilute something, the volume goes up but the concentration goes down
Term
 what is important to know when using inverse proportions   2
Definition
 always use ratios   put the related  terms in opposite positions
Term
 what is important to know when using proportions to solve complex calculations   2
Definition
 requires multiple steps   allows us to see our intermediate answers and more easily identify our mistakes
Term
 What is dimensional analysis   2
Definition
 solution can be deduced by the units that the answer should have   use a string of related terms that are placed such that their units cancel to those that you have determined for the answer
Term
 1 kg= how many pounds
Definition
 2.2 pounds
Term
 benefits of dimensional analysis   3
Definition
 efficient   hard to identify your mistakes   if you have a substance that doesn't look right, make sure you label you rnumbers with both units and substance
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