Question

The temperature of a block of iron, which has a specific heat of 450 J/(kg K), increases by 3 K when 2700 J of energy are added to it. What is the mass of this block of iron?

Answer 1

Mass of iron block is 2 kg

Step-by-step explanation:

We are given;

• Specific heat of Iron as 450 J/kg/K
• Change in temperature as 3 K
• Heat Energy as 2700 Joules

We are required to determine the mass of iron

To answer the question, we will consider the formula;

Heat energy = Mass × specific heat × Change in temperature

In this case;

Mass = Heat energy ÷ (specific heat × change in temperature)

Therefore;

Mass of Iron block = 2700 Joules ÷ (450 J/kg/K × 3 K)

= 2 kg

Therefore, the mass of iron block is 2 kg