Explanation:
Ice at 273K is more effective in cooling than water at the same temperature due to the following reasons:

Temperature Difference:
- Ice at 273K is at a lower temperature than water at the same temperature. This temperature difference allows ice to absorb more heat from its surroundings in order to melt and reach the same temperature as water.

Latent Heat of Fusion:
- When ice melts into water, it undergoes a phase change from solid to liquid. This process requires the absorption of a significant amount of heat energy, known as the latent heat of fusion. As a result, ice is able to absorb more heat from its surroundings compared to water at 273K.

Specific Heat Capacity:
- Ice has a lower specific heat capacity than water. This means that it requires less heat energy to raise the temperature of ice compared to water. As a result, ice can absorb heat more rapidly and effectively cool its surroundings.

Insulation Effect:
- Ice has a solid structure which allows it to maintain its shape and surface area, creating a larger surface area for heat exchange. This allows ice to effectively cool its surroundings through conduction and convection.

Conclusion:
In conclusion, ice at 273K is more effective in cooling than water at the same temperature due to its lower temperature, latent heat of fusion, specific heat capacity, and insulation effect. This makes ice a valuable tool for cooling applications in various industries and everyday life.

Name the autonomous organeless in cell