Because since there's no water in the can, the cold water outside of it didn't have to equalize with the missing hot water that's missing from inside the can. if there was hot water inside the can then it was plunged inside the ice water, there it would have instantly been crushed.
Hope this helps
Answer:
mid-ocean ridges
Explanation:
Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor.
This example is describing the Chromatography method.