Biology is the study of life
Explanation:
c and d. I'm not sure which one is better tho
C.
This is basically the definition of percent composition which is how much mass a element contributes to a specific molecule.
Answer:
Ne
Explanation:
Noble gas, Unreactive therefore does not exist as a diatomic molecule
Answer:
D
Commutator is the answer
Explanation:
The commutator systematically converts the current direction between the rotor and the outer circuit. As the shaft revolves, the commutator converts the course of current in a winding. For a separate armature winding, when a cylinder has reached one-half perfect turn, the winding is now attached so that current passes through it in the reverse of the original direction.
