Skip to main content
Ch.1 - Chemical Tools: Experimentation & Measurement
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 85

What is the difference in mass between a nickel that weighs 4.8 g and a nickel that weighs 4.8673 g?

검증된 단계별 안내
1
Identify the masses of the two nickels: 4.8 g and 4.8673 g.
Set up the subtraction to find the difference in mass: 4.8673 g - 4.8 g.
Align the decimal points to ensure accurate subtraction.
Perform the subtraction, keeping track of significant figures.
The result will give you the difference in mass between the two nickels.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m

주요 개념

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

Mass Measurement

Mass is a measure of the amount of matter in an object, typically expressed in grams. In this context, the mass of the nickels is given in grams, which allows for direct comparison. Understanding how mass is measured and the significance of precision in measurements is crucial for accurately determining differences in mass.
추천 영상:
가이드 코스
02:52
Units of Radiation Measurement

Significant Figures

Significant figures are the digits in a number that contribute to its precision. When performing calculations involving measurements, it is important to consider the number of significant figures to ensure that the result reflects the precision of the measurements. In this case, the difference in mass should be reported with the appropriate number of significant figures based on the least precise measurement.
추천 영상:
가이드 코스
01:09
Significant Figures Example

Subtraction of Measurements

When calculating the difference between two measurements, the process involves simple subtraction. However, the result must be reported with the same level of precision as the measurement with the least number of decimal places. This concept is essential for ensuring that the final answer accurately reflects the precision of the original measurements.
추천 영상:
가이드 코스
01:55
Scientific Notation Subtraction