Program Overview. All 50 states, the District of Columbia, Puerto Rico, and the Virgin Islands are members of the Interstate Compact. The Interstate Compact for Adult Offender Supervision is administered in Texas through the TDCJ Interstate Compact Office.rogram Overview. All 50 states, the District of Columbia, Puerto Rico, and the Virgin Islands are members of the Interstate Compact. The Interstate Compact for Adult Offender Supervision is administered in Texas through the TDCJ Interstate Compact Office.
Estimating the size of a molecule using oil. It would be wonderful if you could measure the size of a single atom, but atoms are so small that it cannot be done directly. Yet you can find the size of a molecule in a roundabout way and from that calculate the size of an atom. Lord Rayleigh (English physicist, 1842 to 1919.
The mass number measures the number of protons and neutrons in the nucleus of a particular atom. The atomic mass measures the average mass of all atoms for an element. For example, a carbon atom might have a mass number of 12 or 14 (or something else), but carbon in general has a mass of 12.011 amu.