What is the mass of a piece of lead taken at a temperature of 327 degrees Celsius if it can

What is the mass of a piece of lead taken at a temperature of 327 degrees Celsius if it can be melted by transferring 1 kilojoule of heat.

Problem data: t (temperature of the taken piece of lead before heat transfer) = 327 ºС (temperature of the beginning of melting); Q (heat transferred) = 1 kJ (1000 J).

Reference values: λ (specific heat of fusion of lead) = 0.25 * 10 ^ 5 J / kg.

We express the mass of a piece of lead taken from the formula: Q = λ * m, whence m = Q / λ.

Let’s perform the calculation: m = 1000 / (0.25 * 10 ^ 5) = 0.04 kg.

Answer: The mass of the taken piece of lead is 0.04 kg.