Jbreezy said:What is AFAIK?
I think I might challenge him on his grading of this question. I need to be sure though. Thanks for reply;s
I feel this question is ambiguous.
C). Latent HeatHeat capacity (usually denoted by a capital C, often with subscripts), or thermal capacity, is the measurable physical quantity that shows the amount of heat required to change the temperature of an object or body by a given amount.
Derived quantities that specify heat capacity as an intensive property, i.e., independent of the size of the body or amount of a sample, are the molar heat capacity, which is the heat capacity per mole of a pure substance, and the specific heat capacity, often simply called specific heat, which is the heat capacity per unit mass of a material. .
Latent heat is the heat released or absorbed by a body or a thermodynamic system during a constant-temperature process. A typical example is a change of state of matter, meaning a phase transition such as the melting of ice or the boiling of water.
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A specific latent heat (L) expresses the amount of energy in the form of heat (Q) required to completely effect a phase change of a unit of mass (m), usually 1kg, of a substance as an intensive property:
Latent heat and specific heat are both measures of the amount of heat energy required to change the temperature of a substance. However, latent heat refers to the amount of heat energy required to change the phase of a substance (e.g. from solid to liquid), while specific heat refers to the amount of heat energy required to change the temperature of a substance by a certain amount.
Latent heat is typically measured in joules per kilogram (J/kg), while specific heat is measured in joules per kilogram per degree Celsius (J/kg°C). These measurements can be determined through experiments and calculations using the specific properties of a substance.
No, latent heat and specific heat are not the same for a substance. Each substance has its own unique values for latent heat and specific heat, which are dependent on factors such as molecular structure and intermolecular forces.
Latent heat and specific heat play important roles in the heating and cooling process of a substance. When a substance is heated, it will first reach its specific heat capacity and then any additional heat energy will be used to change the substance's phase (latent heat). Similarly, when a substance is cooled, it will first release latent heat energy when changing phases and then its temperature will decrease as specific heat energy is released.
Yes, latent heat and specific heat are important concepts in everyday life. They help explain the processes of melting, boiling, and condensation, which are essential for cooking, cleaning, and many other daily activities. These concepts are also important in industries such as agriculture and energy production.