How much heat is needed to raise...?

Question

How much heat is needed to raise the temperature of 1 500ml water by 50.0 degress celcuius ? Remember 1mL of water has a mass of 1.00g.

Answer 1

To answer this question, you need to know the specific heat of water: 4200 J/(kg·K). This can be rewritten as 4.2 kJ/(kg·K).

Step 1: Convert the water from mL to g to kg.
1500 mL H2O has a mass of 1500 g, or 1.5 kg.

Step 2: Multiply the mass, temperature, and specific heat to find the amount of heat.
So: 4.2 kJ/(kg·K) * 1.5 kg * 50 K = 315 kJ of heat (solution)