The energy needed to raise the temperature of the mercury is 223.44 J.
The given parameters;
- specific heat capacity of the mercury, C = 380 J/kg/k
- mass of the mercury, m = 42 g = 0.042 kg
- initial temperature, t₁ = 25 ⁰C
- final temperature, t₂ = 39 ⁰C
The energy needed to raise the temperature of the mercury is calculated as follows;
E = mcΔt
where;
- Δt is change in temperature
E = 0.042 x 380 x (39 - 25)
E = 223.44 J
Thus, the energy needed to raise the temperature of the mercury is 223.44 J.
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