Answer:
its 40. hope this helps : )
Step-by-step explanation:
7 unit to the left, means it is 7 less than -1.
-1-7 = -8
Ans: -8
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.)
Answer: a cube
(you could have looked this up on google that's what I did)
They are making me write an answer with at least 20 characters sorry
