Final answer:
Molar heat capacity is the heat energy required to raise the temperature of one mole of a substance by 1°C, while specific heat capacity refers to the energy needed to raise the temperature of one gram of a substance by 1°C. The formula Q = mcΔT is used to calculate the heat exchange based on mass, temperature change, and specific heat.
Step-by-step explanation:
Molar heat capacity is defined as the amount of heat energy needed to raise the temperature of one mole of a substance by one degree Celsius (1°C). It is an important concept in chemistry that explains how much energy is required to change the temperature of a specific quantity of a substance.
The heat capacity of an object depends on its mass and its composition. For instance, an object with twice the mass will have a heat capacity that is twice as large, assuming the material is uniform. Therefore, it's important to indicate the quantity of the substance when reporting its heat capacity.