When a metal reacts with water, a metal hydroxide and hydrogen gas are formed. The reaction is usually exothermic, meaning that it releases heat. The ease with which a metal reacts with water depends on its reactivity. The more reactive the metal, the more vigorously it will react with water. Metals such as sodium and …
Reaction of metals with water – ജലവുമായുള്ള ലോഹങ്ങളുടെ പ്രതിപ്രവർത്തനം Read More »
The volume of a gas is directly proportional to the number of moles present. This means that if the number of moles of a gas is increased, the volume of the gas will increase as well. The relationship can be expressed mathematically as: Volume = n × R × T/P, where n is the number …
The number of molecules in a sample depends on the type of molecule and the amount of sample. For example, a teaspoon of water contains about 2.7 x 10^22 molecules of water.
The gram atomic mass is the mass in grams of one mole of atoms of a particular element. It is equal to the atomic weight in atomic mass units multiplied by Avogadro’s number (6.02 x 10^23). Gram atomic mass = (Number of moles of atoms) × (Atomic mass of element) 12.
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.