The electric potential of an object is equal to the amount of work that has to be done to bring the unit positive charge from the infinite distance to that object. Hence the voltage of positively charged objects is positive, the voltage of negatively charged items is negative and the voltage of electric neutral objects […]
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Chemical Formula Copper pyrites – CuFeS2 Meta Phosphoric Acid – HPO3 Lead Sulphide – PbS Hematite – Fe2O3 Silicon Dioxide – SiO2 Magnesium Carbonate – MaCO3 Phosphine gas was discovered by Philippe Gengembre in 1783. Gengembre made it by the action of caustic soda on phosphorus. It is chemical formula PH3. Phosphine Gas Preparation Phosphides – When […]
Chemical Formula Stannic Chloride – SnCl4 Stannous Chloride – SnCl2 Ferrous Sulfate – FeSO4 Hematite – Fe2O3 Silicon Dioxide – SiO2 Magnesium Carbonate – MaCO3 Nitrous acid is a temporary additive. It is not found in an independent state. Its aqueous solution can be obtained at low temperatures. It continues to decompose slowly even at room temperature. Therefore, to […]