Question

How much heat is required to raise the temperature of \( 2 \, \text{kg} \) of water from \( 25^\circ C \) to \( 75^\circ C \)? (Specific heat capacity of water \( c = 4200 \, \text{J/kg}^\circ C \))

• A. \( 4.2 \times 10^5 \, \text{J} \)
• B. \( 5.0 \times 10^5 \, \text{J} \)
• C. \( 3.5 \times 10^5 \, \text{J} \)
• D. \( 4.8 \times 10^5 \, \text{J} \)

Hint:

Heat required \( Q = mc\Delta T \), where \( m \) is mass, \( c \) specific heat, and \( \Delta T \) temperature change.