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.
For example, according to salary.com, the median expected salary for a typical chiropractor in the United States is $78,994. According to data on collegegrad.com, median annual earnings of salaried chiropractors were $65,330 in 2002 with the middle 50 percent earning between $44,140 and $102,400 a year.or example, according to salary.com, the median expected salary for a typical chiropractor in the United States is $78,994. According to data on collegegrad.com, median annual earnings of salaried chiropractors were $65,330 in 2002 with the middle 50 percent earning between $44,140 and $102,400 a year.