Answer:
B and D
Step-by-step explanation:
See attachment for math work and answer.
The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope. (Atomic mass is also referred to as atomic weight, but the term "mass" is more accurate.)
You would move five down and eight to the right, it depends how how the grid is
Hi, sadly I am
not sure. Do you maybe mind explaining what rooster or your lesson is? Comment to me and Ill be glad to help!
