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Q:
Explain why food cold more quickly in salt water than pure water.
- Giadom, Victor B. (age 16)
Port Harcourt, Rivers, Nigeria
A:
I think what you're describing is that saltwater can be cooled down to about -21°C before freezing, much colder than the 0°C freezing point of pure water. So it's a better coolant for things that need to be really cold, such as ice cream.
Mike W.
(published on 05/21/2012)
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