In chemistry, dimensional or unit analysis is a method of describing the connection between two measured quantities. it is also used to understand the direct courting between two physical portions or to specific one-of-a-kind measurement units in a single size unit to remedy the equations.
Example:
Determine the relationship between two physical quantities: 12 and 18.
Solution:
Given:
Step 1: Perform Unit Conversion (if necessary):
For this example, both quantities are already in the same units, so no conversion is needed.
Step 2: Express the Quantities in Ratio Form:
\(12 : 18\)
Step 3: Simplify the Ratio:
Divide both values by their greatest common divisor (GCD), which is 6:
\(12 : 18 = 2 : 3\)
Step 4: Compare the Quantities:
Conclusion:
The simplified ratio between the two physical quantities is \(2 : 3\), with Physical Quantity 2 being 1.5 times larger than Physical Quantity 1.
An online unit analysis calculator can do the unit conversion and find the ratios among quantities via following those steps:
From the supply of Wikipedia: Concrete numbers and base devices, percentages, and derivatives, Conversion thing, Dimensional homogeneity.