In following equiation calculate value of H: 1kg ice at `-20^@C=H+1`kg water at `100^@C`, here H means heat required to change the state of substance.

Explanation

To calculate the value of H in the equation \(1 \text{ kg ice at } -20^\circ C = H + 1 \text{ kg water at } 100^\circ C\), we need to determine the total heat required to convert 1 kg of ice at -20°C to 1 kg of water at 100°C. We will break this process down into several steps:

### Step 1: Heating the Ice from -20°C to 0°C
We first need to calculate the heat required to raise the temperature of 1 kg of ice from -20°C to 0°C.

The formula for heat (Q) is:
\[
Q = m \cdot s \cdot \Delta T
...