Question

The temperature of a iron bar rises by 10.0°C when it absorbs 2.35 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of iron from these data. kJ/kg · °C

Answer 1

The specific heat of iron can be determined using the formula Q = mcΔT, where Q is the heat absorbed, m is the mass, c is the specific heat, and ΔT is the change in temperature. Solving for c, we find that the specific heat of iron is 0.0045 kJ/g °C.

Step-by-step explanation:

To determine the specific heat of iron, we can use the formula:

Q = mcΔT

Where Q is the heat absorbed, m is the mass of the iron bar, c is the specific heat of iron, and ΔT is the change in temperature.

Using the given values, we have:

2.35 kJ = (525 g) c (10.0 °C)

Solving for c:

c = 2.35 kJ / (525 g x 10.0 °C) = 0.0045 kJ/g °C

Therefore, the specific heat of iron is 0.0045 kJ/g °C.