How much heat is needed to heat an 80 g aluminum spoon from 20 ° C to 80 ° C?

univerkov | April 2, 2021 | education

Initial data: m (weight of the taken aluminum spoon) = 80 g (0.08 kg); t0 (spoon temperature before heating) = 20 ºС; t (final temperature) = 80 ºС.

Reference values: Ca (specific heat capacity of aluminum) = 920 J / (kg * ºС).

The consumed thermal energy for heating the aluminum spoon is determined by the formula: Q = Ca * m * (t – t0).

Calculation: Q = 920 * 0.08 * (80 – 20) = 920 * 0.08 * 60 = 4 416 J.

Answer: To heat the taken aluminum spoon you need 4,416 Joules of heat.

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