Molecules are held together by either covalent bonding or ionic bonding. Several types of non-metal elements exist only as molecules in the environment. For example, hydrogen only exists as hydrogen molecule. A molecule of a compound is made out of two or more elements.
In general, chiropractic services range from approximately $30 to $200 per session. Of course, each type of treatment has a different cost. For example, an initial consultation with a chiropractor may be provided at no charge, while a typical therapy session costs about $65 on average.
Health Services Managers. Chiropractors paid their health services managers an average $34.49 per hour, or $71,740 a year, as of May 2011, according to the Bureau of Labor Statistics.edical assistants in chiropractic offices averaged $12.71 per hour, or $26,430 per year, in 2011. They are not the same as physician assistants, who diagnose and treat patients under the supervision of doctors.