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Ch.1 - Chemical Tools: Experimentation & Measurement
All textbooksMcMurry 8th EditionCh.1 - Chemical Tools: Experimentation & MeasurementProblem 100
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Chapter 1, Problem 100

Weights in England are commonly measured in stones, where 1 stone = 14 lb. What is the weight in pounds of a person who weighs 8.65 stones?

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Unit Conversion

Unit conversion is the process of converting a quantity expressed in one unit to another unit. In this case, we need to convert stones to pounds using the conversion factor that 1 stone equals 14 pounds. Understanding how to apply conversion factors is essential for solving problems involving different measurement systems.
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Proportional Relationships

Proportional relationships describe how two quantities relate to each other in a consistent ratio. Here, the relationship between stones and pounds is linear, meaning that as the number of stones increases, the weight in pounds increases proportionally. Recognizing this relationship helps in accurately calculating the total weight.
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Dimensional Analysis

Dimensional analysis is a mathematical technique used to convert one set of units to another by multiplying by conversion factors. This method ensures that units cancel appropriately, leading to the desired unit in the final answer. It is a critical skill in chemistry and physics for ensuring that calculations are dimensionally consistent.
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