To calculate the number of kilocalories (kcal) needed for 1 ton of steam, we need to consider the latent heat of vaporization of water.
The latent heat of vaporization is the amount of heat energy required to convert a given amount of liquid into vapor at a constant temperature and pressure. For water, the latent heat of vaporization is approximately 540 kcal/kg.
Since 1 ton is equal to 1,000 kilograms, we can calculate the energy required for 1 ton of steam as follows:
Energy = Latent Heat of Vaporization × Mass of Water
Energy = 540 kcal/kg × 1,000 kg
Energy = 540,000 kcal
Therefore, 1 ton of steam requires approximately 540,000 kilocalories of energy.