a tile is a square of side 30 cm. how many such tiles would be required to cover the floor of square room of side 6 m
Answers
Gases were among the first substances studied using the modern scientific method, which was developed in the 1600s. It did not take long to recognize that gases all shared certain physical behaviours, suggesting that gases could be described by one all-encompassing theory. The
kinetic molecular theory of gases
is a model that helps us understand the physical properties of gases at the molecular level. It is based on the following concepts:
Gases consist of particles (molecules or atoms) that are in constant random motion.
Gas particles are constantly colliding with each other and the walls of their container. These collisions are elastic; that is, there is no net loss of energy from the collisions.
Gas particles are small and the total volume occupied by gas molecules is negligible relative to the total volume of their container.
There are no interactive forces (i.e., attraction or repulsion) between the particles of a gas.
The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and all gases at the same temperature have the same average kinetic energy.
Figure 6.6 “The Kinetic Molecular Theory of Gases” shows a representation of how we mentally picture the gas phase.
Figure 6-6
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