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White ppt of BaSO₄ (barium sulphate)

INVERTED funnel arrangement

as it is highly soluble in water

Cu---> Cu²⁺ + 2e^-

a pure strip of copper

Organic compounds which have the same molecular formula but diffrent structural formula are called isomers and the phenomenon is called isomerism

under the same conditions of temperature and pressure, equal volumes of gases produce equal number of molecules.

When gases react they do so in volumes which bear a simple whole number ratio with each other and with the volumes of the gaseous products formed provided the physical conditions of temperature and pressure remain constant

The amount of energy released when an electron is added to the outermost shell of an isolated gaseous atom

The tendency of an atom in a covalent molecule to attract the shared pair of electron towards itself