Absolute humidity is expressed in grams per cubic meter of air. Absolute humidity refers to the actual amount of water vapor present in a given volume of air and is typically measured in grams per cubic meter (g/m³), making option ...
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Steam burns hands more than boiling water because steam contains latent heat. When steam condenses on the skin, it releases this latent heat, transferring more energy to the skin compared to boiling water at the same temperature. This additional heat ...
The heat required to change a unit mass of a solid substance from solid to liquid at its melting point is called the latent heat of melting of solid. This energy is needed to break the bonds holding the solid ...
When salt is added to water, the boiling point increases and the freezing point decreases. This phenomenon is due to the colligative properties of solutions, where the presence of a solute affects the boiling and freezing points of the solvent.
The first law of thermodynamics confirms the concept of energy conservation. It states that energy cannot be created or destroyed, only transformed from one form to another, ensuring the total energy of an isolated system remains constant.
In an adiabatic change, no heat is exchanged with the surroundings, so heat remains unchanged. However, the temperature of the system can change due to work done on or by the system.
The temperature at which a solid substance transitions into a liquid state upon heating is called the melting point. This point marks the temperature at which the solid’s internal structure breaks down, allowing its particles to move freely and assume ...
Cryogenic testing is conducted at extremely low temperatures, typically around -196 °C. These temperatures are necessary for handling and testing materials and equipment that are intended for use in cryogenic applications, such as rocket engines, superconductors, and other low-temperature technologies.
Boiling is the process where a substance changes from its liquid state to vapor state throughout the bulk of the liquid, typically occurring at a specific temperature called the boiling point.
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.