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percent composition

 

Definitions from the Web

Percent Composition

Description:

Percent composition refers to the relative proportion of individual elements in a compound expressed as a percentage of the total mass or the total number of atoms. It provides valuable information about the composition and structure of a substance.

Senses and Usages:

1. Chemistry

In chemistry, percent composition is used to determine the amount of each element present in a compound. By calculating the percent composition, scientists can identify the elements responsible for the chemical properties of a substance. This information is crucial for various applications, such as stoichiometry, synthesis, and determining empirical formulas.

Example sentence:

The percent composition of water (H2O) is approximately 11% hydrogen and 89% oxygen.

2. Nutrition

In nutrition, percent composition is used to analyze and assess the macronutrient composition of food, such as the percentage of carbohydrates, proteins, and fats present. It helps individuals make informed dietary choices and ensure a balanced intake of essential nutrients.

Example sentence:

The percent composition of a particular food item reveals that it contains 25% carbohydrates, 15% proteins, and 10% fats.

3. Geography

In geography, percent composition is utilized to describe the distribution or proportion of different types of land or features within a specific area. It helps in studying the characteristics of regions, analyzing urban development, or assessing land use patterns.

Example sentence:

The percent composition of agricultural land in the country has significantly decreased due to urbanization.

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