MOLECULAR FORMULA DEFINITION
A formula which tells the actual number of atoms present in a molecule of a substance is known as molecular formula.
Examples: H2O2 and C6H12O6 are the molecular formulas of hydrogen peroxide and glucose respectively.
A formula which tells the actual number of atoms present in a molecule of a substance is known as molecular formula.
Examples: H2O2 and C6H12O6 are the molecular formulas of hydrogen peroxide and glucose respectively.
Introduction: In 1662, Boyle found a relationship between volume and pressure of gases. He announced this relationship in the form of a law known as Boyle’s law. Statement: “At constant temperature, volume of a given mass of a gas is inversely proportional to pressure exerted on it.” OR “Product of pressure and volume of a…
The obtaining of crystals by cooling the hot saturated solution leaving behind mother-liquor is called Crystallization. Basic Principal: The preparation of a chemical compound usually affords a crude product and there is an need to purify it by crystallization from a suitable solvent. The basic principle of crystallization is the fact that the solute should…
The pressure above the surface of the liquid by the vapours at equilibrium between liquid and its vapours at a particular temperature is called equilibrium vapour pressure or simply vapour pressure. Explanation: If we enclosed a liquid in a vessel, molecules start to evaporate above the surface of liquid. Such molecules return back to the…
“The mass of one atom of an element compared with the mass of one atom of carbon taken as 12 is called relative atomic mass of the element.” Explanation: The mass of one atom of magnesium is two times the mass of one atom of carbon, therefore relative atomic mass of magnesium would be 24….
The relative abundance of isotopes of an element is determined by mass spectrometry. The properties of an element mostly correspond to the most abundant isotopes of that element. More than 280 isotopes are known, which occur in nature, out of which 40 are radioactive. Moreover, about 300 artificial isotopes have been produced through disintegration. Mono-isotopic…
Introduction: In 1787, Charles found a relationship between volume and temperature of gases. He announced this relationship in the form of a law known as Charles’ law: Definition: “Volume of a given mass of a gas is directly proportional to the absolute temperature at constant pressure.” Mathematical Charles Law Formula: Another Statement for Charles’ Law:…