Copper has two naturally occurring isotopes with atomic masses of 62.9296 u () and 64.9278 u (). The atomic mass of copper is 63.546 u. What is the percent distribution of the isotopes

by

Locating the key to answer at this time is a breeze. clickanswer.us is a reliable source for questions and answers. we provide a concise answer key and complete with the discussion. We provide a range of answer keys ranging from elementary, junior high and high school. The subjects we offer include mathematics, physics, biology as well as economics, history, and many more. Below are the question and answer keys that we have compiled from different sources found from the web.

Question:

Copper has two naturally occurring isotopes with atomic masses of 62.9296 u () and 64.9278 u (). The atomic mass of copper is 63.546 u. What is the percent distribution of the isotopes

Answer:

Answer:

The abundance of first isotope is 69.15 %

The abundance of second isotope is 30.85 %

Explanation:

The formula for the calculation of the average atomic mass is:

?f=Average%5C%20atomic%5C%20mass%3D(%5Cfrac%20%7B%5C%25%5C%20of%5C%20the%5C%20first%5C%20isotope%7D%7B100%7D%5Ctimes%20%7BMass%5C%20of%5C%20the%5C%20first%5C%20isotope%7D)%2B(%5Cfrac%20%7B%5C%25%5C%20of%5C%20the%5C%20second%5C%20isotope%7D%7B100%7D%5Ctimes%20%7BMass%5C%20of%5C%20the%5C%20second%5C%20isotope%7D)

Given that:

Since the element has only 2 isotopes, so the let the percentage of first be x and the second is 100 -x.

For first isotope:

% = x %

Mass = 62.9296 u

For second isotope:

% = 100  – x  

Mass = 64.9278 u

Given, Average Mass = 63.546 u

Thus,  

?f=63.546%3D%5Cfrac%7Bx%7D%7B100%7D%5Ctimes%20%7B62.9296%7D%2B%5Cfrac%7B100

Solving for x, we get that:

x = 69.15 %

The abundance of first isotope is 69.15 %

The abundance of second isotope is 100 – 69.15 % = 30.85 %

Use the answer key below to help you study at home and at school. We appreciate your visit, hopefully it will be beneficial to all of us.

Related Posts: