Why do dry ice bottles explode when mixed with the hot water?

give evidence and reasoning

As the solid carbon dioxide warms, it sublimates to gas. With limited room for the gas to expand, the pressure in the bottle increases. Bombs typically rupture within 30 seconds to 30 minutes, dependent largely on the temperature of the air outside the bottle.

Explanation:

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This explosion is caused by the dry ice sublimation, which is sped up by the warm water. Dry ice is actually frozen carbon dioxide, and when it sublimates, it turns back into gas. The gas expands, creating pressure inside the bottle, and this eventually will burst the bottle or blow the cap off.

the volume increases