Final answer:
The specific heat (c) is measured in units of J/g·°C in the formula Q = mcΔT.
Step-by-step explanation:
In the formula Q = m × c × ΔT, the specific heat (c) is the quantity measured in units of J/g · °C (joules per gram-degree Celsius).
The specific heat is a property of the substance and represents the amount of heat necessary to change the temperature of 1 gram of the material by 1 °C.
The amount of heat gained or lost by a sample (q) can be calculated using the equation q = mcΔT, where m is the mass of the sample, c is the specific heat, and ΔT is the temperature change.
Q = refers to the heat energy in Joules (J) m = refers to the mass of the substance in kilogram (kg) c = refers to the specific heat in joules per kilogram (J/kg\cdot k) \Delta = refers to the symbol of change.
While the specific heat capacity is typically reported in J/(kg · K) or J/(kg · °C) for larger masses, when referred to small amounts of substance, such as measuring the mass in grams, the unit is often expressed in J/g · °C.