Which of the following represents the quantity of heat required to raise the temperature of one gram of a substance by one degree Celsius?

A) Heat of reaction
B) Boiling point
C) Specific heat capacity
D) Thermochemical value

Respuesta :

Answer:

C

Explanation:

The units of specific heat are usually calories or joules per gram per Celsius degree. For example, the specific heat of water is 1 calorie (or 4.186 joules) per gram per Celsius degree. The Scottish scientist Joseph Black, in the 18th century, noticed that equal masses of different substances needed different amounts of heat to raise them through the same temperature interval, and, from this observation, he founded the concept of specific heat. In the early 19th century the French physicists Pierre-Louis Dulong and Alexis-Thérèse Petit demonstrated that measurements of specific heats of substances allow calculation of their atomic weights (see Dulong-Petit law). See also heat capacity.

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The statement that represents the quantity of heat required to raise the temperature of one gram of a substance by one degree Celsius is Specific heat capacity. The correct option is C.

What is Specific heat capacity?

When the temperature of a material rises 1 K (or 1 °C), the amount of heat (J) is absorbed per unit mass (kg). It is crucial since it will show how much energy will be needed to warm or cool an object of a certain mass by a certain amount.

The formula of specific heat capacity is [tex]Q=mc\Delta T[/tex]  Where q is the specific heat, m is the mass and t is the change in temperature.

According to the definition, a material's specific heat capacity is normally calculated by calculating the heat capacity of an illustration of the substance, commonly using a calorimeter, and dividing by the sample's mass.

Thus, the correct option is C. Specific heat capacity.

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