a sample of a metal is heated. which of the following are needed to calculate the heat absorbed by the sample? i. the mass of the sample ii. the density of the sample iii. the specific h



Answer :

  1. Mass of sample
  2. Densify of sample
  3. specific heat capacity of sample

What is heat absorption?

  • The heat absorbed is calculated by using the specific heat of steam
  • Heat is a type of energy
  • . When absorbed by a substance, heat causes inter-particle bonds to weaken and break which leads to a change of state (solid to liquid for example).
  • Heat causing a phase change is NOT sufficient to cause an increase in temperature.
  • A reaction in which heat is absorbed is called an endothermic reaction.
  • An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.
  • An endothermic process absorbs heat and cools the surroundings.”
  • These examples could be written as chemical reactions, but are more generally considered to be endothermic or heat-absorbing processes: melting ice cubes. melting solid salts. evaporating liquid water.
  • A heat sink is a device that absorbs heat generated by electronic components or chips.
  • Among the different types of heat sinks, two-phase forced-convection cooling of high-heat-flux/high-power electronic devices is one of the most effective means of thermal management.

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