The following diagram is a representation of 20 atoms of a fictitious element, which we will call nevadium (Nv). The red spheres are ²⁹³Nv, and the blue spheres are ²⁹⁵Nv. (a) Assuming that this sample is a statistically representative sample of the element, calculate the percent abundance of each element.

검증된 단계별 안내

Count the total number of atoms in the diagram. This will be the sum of red and blue spheres.

Count the number of red spheres (293Nv) in the diagram.

Count the number of blue spheres (295Nv) in the diagram.

Calculate the percent abundance of 293Nv by dividing the number of red spheres by the total number of atoms and then multiplying by 100.

Calculate the percent abundance of 295Nv by dividing the number of blue spheres by the total number of atoms and then multiplying by 100.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

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

Isotopes

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses. For example, nevadium (Nv) has two isotopes: 293Nv and 295Nv. Understanding isotopes is crucial for calculating their relative abundances in a sample.

Percent Abundance

Percent abundance refers to the proportion of each isotope of an element present in a sample, expressed as a percentage. To calculate percent abundance, divide the number of atoms of each isotope by the total number of atoms and multiply by 100. This concept is essential for determining the composition of the nevadium sample in the question.

Statistical Representation

A statistically representative sample accurately reflects the characteristics of the larger population from which it is drawn. In this context, assuming the sample of 20 nevadium atoms is representative allows for reliable calculations of percent abundance. This concept ensures that the results can be generalized to the entire element rather than just the sample.