Answer:
4
Explanation:
Sodium Na, Carbon C, hydrogen H2, Oxygen O
Structure of <span>N-ethyl-3-methylpentanamide is shown below,</span>
<span>Associating the need of surgeon in practice , we write a software of human body biocycle law . this software can provide a science reliance in the time selection of surgical operation plan to the main surgeon
(just an example^)</span>
Answer:
zncl2. . . . . . . . . . . . . . . .
