The copper soldering iron cools down from 200 to 150 degrees, the weight of the soldering iron is 250g.

The copper soldering iron cools down from 200 to 150 degrees, the weight of the soldering iron is 250g. The amount of heat given to the environment is equal to …

Initial data: t1 (initial temperature of the copper soldering iron) = 200 ºС; t2 (final temperature) = 150 ºС; m (soldering iron weight) = 250 g (0.25 kg).

Reference data: Cm (specific heat capacity of copper) = 380 J / (kg * ºС).

The amount of heat that the copper soldering iron will give to the environment is determined by the formula: Q = Cm * m * (t1 – t2).

Calculation: Q = 380 * 0.25 * (200 – 150) = 4750 J (4.75 kJ).

Answer: The soldering iron will give 4.75 kJ of heat to the environment.