A soft keyboard (sometimes called an onscreen keyboard or software keyboard) is a system that replaces the hardware keyboard on a computing device with an on-screen image map.
An ideal gas is defined as one in which all collisions between atoms or molecules are perfectly eleastic and in which there are no intermolecular attractive forces. One can visualize it as a collection of perfectly hard spheres which collide but which otherwise do not interact with each other.
The Ideal Gas Law can easily be reduced to Charlesâ, Boyleâs, or Avogadroâs Law. For example, suppose that n and T are held constant. Then the product nRT is also a constant and we can give it the name, k. The Ideal Gas Law then becomes PV=k, which is just Boyleâs Law. The symbol âRâ in this equation is a constant called âthe gas constantâ and its value can be computed by measuring the temperature, volume, and pressure of a known quantity of an ideal gas and substituting these values into the Ideal Gas Law solved for R. In fact, this is the bases of the laboratory exercise for this lesson.