What is the formula for the change in thermal energy and how is it used to calculate the amount of heat transferred in a system?

The formula for the change in thermal energy is Q mcT, where Q represents the amount of heat transferred, m is the mass of the substance, c is the specific heat capacity of the substance, and T is the change in temperature. This formula is used to calculate the amount of heat transferred in a system by multiplying the mass of the substance by the specific heat capacity and the change in temperature.