Heat Capacity Symbol and Unit

Steps:

• Heat capacity is the amount of heat needed to raise an object's temperature by 1°C.
• The standard symbol for heat capacity of an object is C.
• Its SI unit is joules per degree Celsius (J/°C), equivalent to J/K.
• Compare choices: A matches C and J/°C; others use H (for enthalpy) and per-mass units.

Why A is correct:

• By definition, heat capacity C = Q/ΔT, with units J/°C for the total capacity of an object.

Why the others are wrong:

• B: Uses H (enthalpy symbol) and specific heat unit J/(kg °C).
• C: Uses H and specific heat unit J/kg °C (minor notation variant).
• D: Uses H and specific heat unit J/(kg °C).

Final answer: A