The amount of heat required to raise temperature of 55.85 g of iron 1 degrees C is called its
A. Change of energy
B. Enthalpy
C. Molar heat capacity
D. Specific heat capacity
E. Specific Heat.
55.85 is the atomic mass of iron; therefore, this is the molar heat capacity.
The correct answer is D. Specific heat capacity.
To understand why, let's break down the options and their meanings:
A. Change of energy - This refers to the difference in energy before and after a process. While heat is a form of energy, the question asks for the specific term related to the heat required to raise the temperature of iron.
B. Enthalpy - Enthalpy refers to the total heat content of a system. While it is related to heat, it does not specify the amount required to raise the temperature of a specific substance.
C. Molar heat capacity - Molar heat capacity is the amount of heat required to raise the temperature of one mole of a substance by one degree Celsius. The question, however, asks for the heat required to raise the temperature of 55.85 grams of iron, not one mole.
D. Specific heat capacity - This is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius. The question specifically asks for the heat required to raise the temperature of 55.85 grams of iron, so this option is the most appropriate.
E. Specific Heat - This is another term that refers to the specific heat capacity, which is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius. It is the same as option D and can be used interchangeably.
Therefore, the correct answer is D. Specific heat capacity.