The relative atomic mass (abbreviated as Ar) is the ratio of the average mass of atoms of an element to 1/12 of the mass of a carbon-12 atom. It is an average atomic mass of an element, calculated from the weighted average of all isotopes of an element, taking into account the abundance of each …
Avogadro’s law states that the number of molecules in a given volume of a gas is directly proportional to the number of moles of the gas, when the temperature and pressure are held constant. This means that if the number of moles of a gas doubles, the number of molecules doubles as well.
The volume of a given number of molecules depends on the type of molecule and the temperature and pressure. Generally, the higher the temperature and pressure, the more molecules can fit into a given volume. For example, at standard temperature and pressure, one mole of oxygen gas molecules occupies a volume of 22.4 litres.
Charles’s Law, also known as the law of volumes, states that the volume of a given mass of gas is directly proportional to its temperature when pressure is held constant. This law was discovered by French physicist Jacques Charles in 1787 and is stated mathematically as V/T=k, where V is the volume, T is the …
The temperature of a gas is determined by measuring the average kinetic energy of its molecules. This is done by measuring the pressure, volume and amount of the gas present. The temperature of a gas is closely related to the average kinetic energy of its molecules, and increases as the average kinetic energy increases.
The pressure of a gas is a measure of the force exerted per unit area on the walls of the container in which the gas is confined. It is usually expressed in terms of the atmosphere (atm), the Pascal (Pa), or the bar.
The volume of a gas is dependent on its temperature and pressure. At a constant pressure, the volume of a gas increases with increasing temperature and decreases with decreasing temperature.
Gases have no fixed shape or volume. Gases are highly compressible. Gases are made up of molecules that are in constant motion. Gases tend to diffuse and mix with other gases in their environment. Gases spread out evenly to fill the space they occupy. Gases exert pressure in all directions.
F-block elements, also known as inner transition elements, are the elements found in the f-block of the periodic table. They include the lanthanide and actinide series of elements. They have some common characteristics such as: They have relatively large atomic radii. They are highly reactive and tend to form multiple oxidation states. They display a …
Characteristics of f- block elements – എഫ്-ബ്ലോക്ക് മൂലകങ്ങളുടെ സവിശേഷതകൾ Read More »
Coloured compounds are compounds that are coloured due to the presence of certain ions, atoms, and molecules. The colour is a result of the absorption or reflection of light of certain wavelengths. Examples of coloured compounds include sodium chloride (NaCl), which is white; potassium permanganate (KMnO_4), which is purple; and copper sulfate (CuSO_4), which is …