When using charles's law, why should the temperature units always be kelvin?

Explanation:

On the basis of Charle's law, the volume of a given gas mass changes straightforwardly with the absolute temperature of the gas when the pressure is maintained the same. The absolute temperature is determined with the Kelvin scale. There is a need to use the Kelvin scale as zero on the Kelvin scale relates to a complete stoppage of molecular movement.  

In the gas law problems, the Kelvin scale is used as the volume and pressure of a gas relies upon the motion or kinetic energy of the particles. The Kelvin scale is equivalent to the kinetic energy of the particles, that is, 0 Kelvin signifies 0 kinetic energy, and on the other hand, 0 degree Celsius is basically the freezing point of water.  

he would use the colour black

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.