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Ch.1 - Chemical Tools: Experimentation & Measurement
McMurry - Chemistry 8th Edition
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Tutti i libri di testoMcMurry 8th EditionCh.1 - Chemical Tools: Experimentation & MeasurementProblema 4c
Capitolo 1, Problema 4c

A mammalian HELA cell has a diameter of 2 * 10-5 m. Report the diameter of the cell using the most appropriate prefix on the base unit of meter. (LO 1.5) (c) 200 nm

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1
Identify the given diameter of the HELA cell, which is \(2 \times 10^{-5}\) meters.
Recognize that the problem asks for the diameter to be expressed using an appropriate metric prefix.
Recall that 1 nanometer (nm) is equal to \(10^{-9}\) meters.
Convert the given diameter from meters to nanometers by dividing \(2 \times 10^{-5}\) meters by \(10^{-9}\) meters/nanometer.
Express the result in nanometers, ensuring the use of the correct metric prefix.

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Metric Prefixes

Metric prefixes are used to denote specific powers of ten, making it easier to express large or small quantities. For example, 'nano-' represents 10^-9, which is useful for measuring very small dimensions like the diameter of cells. Understanding these prefixes allows for clear communication of measurements in scientific contexts.
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Metric Prefixes Usage

Cell Size Measurement

Cells, particularly mammalian cells like HELA cells, are typically measured in micrometers (µm) or nanometers (nm) due to their small size. A HELA cell's diameter of 2 * 10^-5 m can be converted to nanometers, as 1 meter equals 1 billion nanometers, facilitating comparisons and understanding in biological studies.
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Units of Radiation Measurement

Unit Conversion

Unit conversion is the process of converting a quantity expressed in one unit to another unit. In this case, converting meters to nanometers involves multiplying by the appropriate factor (1 m = 10^9 nm). Mastery of unit conversion is essential in chemistry and biology for accurate data representation and analysis.
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Conversion Factors
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