# The temperature of zinc is 80 degrees Celsius, and the mass is 730 g, how much heat is required

The temperature of zinc is 80 degrees Celsius, and the mass is 730 g, how much heat is required to heat zinc to its melting point.

These tasks: t (zinc temperature before heating) = 80 ºС; m (mass of zinc taken) = 730 g (0.73 kg).

Reference values: Cs (specific heat of zinc) = 400 J / (kg * K); tmelt (temperature of the beginning of zinc melting) = 419.5 ºС.

The amount of heat for heating zinc from 80 ºС to the melting temperature is determined by the formula: Q = Сц * m * (tmelt – t).

Calculation: Q = 400 * 0.73 * (419.5 – 80) = 99 134 J ≈ 99.1 kJ.

Answer: To heat 730 g of zinc to the melting point, 99.1 kJ of heat is required.

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