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Ch.1 - Matter, Measurement & Problem Solving
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 55b

Use the prefix multipliers to express each measurement without exponents. b. 22×10−15 s

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1
Identify the prefix that corresponds to the exponent given in the problem. Here, the exponent is -15.
Recall that the prefix for 10^{-15} is 'femto', which is abbreviated as 'f'.
Rewrite the measurement using the prefix 'femto' instead of the exponent. Therefore, 22 \(\times\) 10^{-15} s becomes 22 femtoseconds.
Ensure that the unit 's' (seconds) is correctly associated with the prefix 'femto'.
Verify that the expression is now free of exponents and correctly uses the appropriate prefix.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Scientific Notation

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It involves writing a number as a product of a coefficient and a power of ten, such as 2.2 x 10^-15. Understanding this notation is essential for converting measurements into a more manageable format.
추천 영상:
가이드 코스
02:50
Standard Notation to Scientific Notation

Metric Prefixes

Metric prefixes are used to denote specific powers of ten in the metric system, allowing for easier communication of measurements. For example, 'femto-' represents 10^-15, so 22 x 10^-15 seconds can be expressed as 22 femtoseconds. Familiarity with these prefixes is crucial for converting scientific notation into standard metric units.
추천 영상:
가이드 코스
01:16
Metric Prefixes Usage

Unit Conversion

Unit conversion is the process of converting a measurement from one unit to another, often involving the use of conversion factors. In this case, converting from scientific notation to a standard metric unit requires applying the appropriate metric prefix. Mastery of unit conversion is vital for accurately interpreting and communicating scientific measurements.
추천 영상:
가이드 코스
01:56
Conversion Factors