Answer:
The answer to your question is :
a) Abundance of Li-6 = 7.49
b) Abundance of Li-7 = 100-7.49 = 92.5
Explanation:
Data Isotopes Mass Abundance
Li-6 6.015 amu y
Li-7 7.016 amu 100 -y
Lithium atomic mass = 6.941
6.941 = (6.015y) + (7.016)(100-y) /100
6.941 = (6.015y + 701.6 - 7.016y) / 100
6.941 x 100 = 6.015y - 7.016y + 701.6
694.1 -701.6 = - 1.001y
-7.5 = -1.001 y
y = 7.49
Abundance of Li-6 = 7.49
Abundance of Li-7 = 100-7.49 = 92.5
-They limit overgrazing/overpopulation
-They provide food for others
Answer:
it is a sacrafice to god so the spirtit can go free
Explanation:
Answer:
7+9.86+.56=17.42, 100-17.42= 82.58%
Explanation:
Add them all together then minus by 100%
A ground state electron configuration follows the Aufbau Principle that states that electrons should be filled up in orbitals in increasing energy. In the given sequences, the right configuration is <span>1s2 2s2 2p6 3s2 3p6 4s2 3d8. The choice that conforms to this sequence is D. In 2) the possible confirmation that follows Aufbau's principle is D. </span>