Figure 1.
Molecular model of (a) bituminous coal, (b) SDS, and (c) APG1214. The red, gray, white, yellow, and purple balls represent O, C, H, S, and Na+, respectively.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.