The effect on the melting point of a pure substance when another substance is added depends on the nature and quantity of the added substance. Generally, the presence of impurities decreases the melting point of the pure substance.
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Water has the highest specific heat value among the options provided. Its specific heat capacity is approximately 4.18 J/g °C, significantly higher than that of glass, copper, or lead. This property makes water an excellent substance for storing and regulating ...
The specific heat capacity of water is very high. Water’s high specific heat capacity allows it to absorb and store more heat energy compared to land. As a result, land heats up faster during the day than sea water, contributing ...
Water’s high specific heat allows it to absorb a significant amount of heat from the engine, effectively cooling it. This property makes water an efficient coolant for radiators in motor vehicles, helping to maintain engine temperatures within safe operating limits.
Cryogenic engines are crucial components in rockets, utilizing extremely low temperatures to store and handle propellants like liquid hydrogen or liquid oxygen. This technology enables efficient propulsion for space exploration missions, launching spacecraft into orbit and beyond for various scientific ...
Specific heat refers to the amount of heat required to raise the temperature of one unit mass of a substance by one degree Celsius. It is a characteristic property of the substance and is measured in units of energy per ...
The walls of a thermos flask are galvanized with a reflective coating to minimize heat transfer by radiation. This shiny coating reflects infrared radiation, reducing heat loss and maintaining the temperature of the contents.
The inner walls of a thermos flask are shiny to reflect infrared radiation back into the liquid, thereby minimizing heat loss through radiation and helping to maintain the temperature of the contents for a longer period.
Sir James Dewar invented the Thermos flask in 1892. He designed it to minimize heat transfer by creating a vacuum between two layers, effectively keeping liquids hot or cold for longer periods.
The double walls of the shiny inner wall and the outer cover prevent heat from escaping or entering. The thermos flask’s design includes a vacuum between the double walls and a shiny inner surface to minimize heat transfer by conduction, ...