B 2
is which shell are the valence electrons of the elements in period 2 found
I'm preatty sure it is in the periodic table xxx
Answer:
A closed system is a physical system that does not allow transfer of matter in or out of the system, though, in different contexts, such as physics, chemistry or engineering, the transfer of energy is or is not allowed.
Explanation:
C and A because the product of a matter will always be the same and just google A.
