+2, because Beryllium is in the Group II of the periodic table.
Hope this helps!
Answer:
substance is related to the average kinetic energy of the particles of that substance
Explanation:
Answer:
2
b= they are grouped differently, but all the atoms are still there.
Answer:


Explanation:
Given



Required
Determine the area
The area of a triangle is :

By substituting values for the x and y coordinates of A, B and C;
We have:

So:
For instance



The area is:





