How much heat is needed to heat a 300-gram tin bar 90 degrees?

Initial data: m (mass of a tin bar) = 300 g; Δt (change (increase) in the temperature of the tin bar) = 90 ºС.

Reference values: C (specific heat of tin) = 230 J / (kg * K).

SI system: m = 300 g = 0.3 kg.

The required amount of heat for heating a tin bar is determined by the formula: Q = C * m * Δt.

Let’s calculate: Q = 230 * 0.3 * 90 = 6210 J.

Answer: To heat a tin bar, you need 6210 J.