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Question

What is dry ice? Why is it so called? Give two uses of dry ice.


Solution

Dry ice is solid carbon dioxide (similarly to ice of water).It is called dry ice because itgoes from solid to gaseous state without going to liquid phase i.e sublimation(in which instead of solid to liquid to gas it goes through solid to gas).
Uses-

ACCELERATED PLANT GROWTH – A small quantity of CO2 will increase the growth rate of plants.  Allow the dry ice to sublimate in close proximity to the plants for 10-15 minutes daily.

ASPHALT COOLING – Using dry ice allows for the delicate asphalt to stay at required temperatures during transport from the manufacturing plant to job site.  Even more beneficial, using dry ice allows contractors to speed up the cooling process and core the paving sooner.


Chemistry

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