Answer:
19437 J
Explanation:
mass = 100 g
Initial Temperature = 23.5°C
Final Temperature = 70°C
Temperature change, ΔT = 70 - 23.5 = 46.5
Heat = ?
The parameters are related by the equation;
H = mc ΔT
where c = specific heat capacity = 4.18 J/g°C
H = 100 * 4.18 * 46.5 = 19437 J
It's a soft metal, reactive and with a low melting point, with a relative density of 0,97 at 20ºC (68ºF)
Given
Required
Solve
Apply law of indices
Evaluate 10^5
Hence: