In an experiment 50 kg of a coal was burnt completely. The calorific value of the coal is 25,000 J / kg. Calculate the heat produced while the burning of the coal.

Explanation

To calculate the heat produced while burning 50 kg of coal with a calorific value of 25,000 J/kg, we can follow these steps:

### Step 1: Understand the Calorific Value
The calorific value of a fuel is the amount of heat produced when a unit mass (1 kg) of the fuel is completely burned in the presence of oxygen. In this case, the calorific value of coal is given as 25,000 J/kg.

### Step 2: Identify the Mass of Coal
In this problem, we are given that the mass of coal burnt is 50 kg.

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