A 125 g sample of strontium was heated from 0°C to 20°C. It absorbed 750 J of energy. What is the specific heat capacity of iron?

Specific heat capacity of iron (C) = 0.3 J/GK

Explanation:

Given:

Mass of sample (m) = 125 gram

Change in heat (ΔT) = 20°C - 0°C = 20°C

Absorbed energy (ΔE) = 750 J

Find:

Specific heat capacity of iron (C) = ?

Computation:

⇒ Specific heat capacity of iron (C) = ΔE / [mΔT]

⇒ Specific heat capacity of iron (C) = 750 / [125 × 20]

⇒ Specific heat capacity of iron (C) = 750 / [2,500]

⇒ Specific heat capacity of iron (C) = 0.3 J/GK

Specific heat capacity of iron (C) J/g°C

Explanation:

As we know that

Specific heat capacity of iron (C)

Where represents the change in the energy

m represents the mass of the sample and

represents the change in temperature.

Given:

Mass of sample (m) gram

Change in heat ( )

Absorbed energy () J

Substituting the given values in above equation, we get -

Specific heat capacity of iron (C)

Specific heat capacity of iron (C) J/g°C

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