IDNLearn.com offers a collaborative platform for sharing and gaining knowledge. Discover in-depth and reliable answers to all your questions from our knowledgeable community members who are always ready to assist.
Sagot :
The weighted atomic mass of these two isotopes is 63.5679 amu. To calculate this first multiply Copper-63's mass of 62.9296 amu by .6917 which gets you 43.5284. Then multiply Copper-65's mass of 64.9278 by .3083 which gets you 20.0395. Then add 43.5284 and 20.0395 to get the final answer of 63.5679 amu.
Answer: The average atomic mass of copper is 65.5456 amu.
Explanation:
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
[tex]\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i[/tex] .....(1)
- For [tex]_{29}^{63}\textrm{Cu}[/tex] isotope:
Mass of [tex]_{29}^{63}\textrm{Cu}[/tex] isotope = 62.9296 amu
Percentage abundance of [tex]_{29}^{63}\textrm{Cu}[/tex] isotope = 69.17 %
Fractional abundance of [tex]_{29}^{63}\textrm{Cu}[/tex] isotope = 0.6917
- For [tex]_{29}^{65}\textrm{Cu}[/tex] isotope:
Mass of [tex]_{29}^{65}\textrm{Cu}[/tex] isotope = 64.9278 amu
Percentage abundance of [tex]_{29}^{65}\textrm{Cu}[/tex] isotope = 30.83%
Fractional abundance of [tex]_{29}^{65}\textrm{Cu}[/tex] isotope = 0.3083
Putting values in equation 1, we get:
[tex]\text{Average atomic mass of copper}=[(62.9296\times 0.6917)+(64.9278\times 0.3083)][/tex]
[tex]\text{Average atomic mass of copper}=63.5456amu[/tex]
Thus, the average atomic mass of copper is 65.5456 amu.
Thank you for participating in our discussion. We value every contribution. Keep sharing knowledge and helping others find the answers they need. Let's create a dynamic and informative learning environment together. Your questions find answers at IDNLearn.com. Thanks for visiting, and come back for more accurate and reliable solutions.
