What mass of tin, taken at the melting temperature, can be melted by giving it 200 kJ of heat.

Given:

Q = 200 kJ – the amount of heat that was given to the tin of a certain mass in order to melt it;

q = 6 * 10 ^ 4 J / kg is the specific heat of fusion of tin.

It is required to determine m (kilogram) – the mass of tin.

Let’s translate the units of measurement of energy into the SI system:

Q = 200 kJ = 200 * 10 ^ 3 = 2 * 10 ^ 5 Joules.

Then, to determine the mass of tin, you must use the following formula:

Q = q * m, from here we find that:

m = Q / q = 2 * 10 ^ 5 / (6 * 10 ^ 4) = 20/6 = 3.3 kilograms (the result has been rounded to one decimal place).

Answer: You can melt tin weighing 3.3 kilograms.