Water freezes and becomes ice at zero degrees Celsius. Also, water has the odd quality that it begins to expand below about 4 degrees Celsius. So the answer is that it would turn into ice and its volume would increase a little.
Under normal pressure, it will freeze.
it is frozen?
At 0 0C water become ice (solid).
Then you get 400 mL of water of 20 oC
-4 deg F = -20 deg C
Water is a solid at -20 degrees Celsius
Montana holds the record at minus 70 degrees F on 20 January 1954 at Rogers Pass which has an elevation of 5,470 feet. That record is followed by: Peter's Sink Utah at minus 69 degrees F. Riverside Wyoming at minus 66 degrees F. Maybell Colorada at minus 61 degrees F. Idaho, Minnesota and North Dakota have all hit minus 60 degrees F.
water
The question must be clarified -- made more specific.
No, -19 degrees is not colder than -20 degrees.
water will become colder
(-20) degrees Fahrenheit = -28.8 degrees Celsius.
Neither. Both are very cold!
-4 ℉
(-20) degrees Celsius = -4 degrees Fahrenheit.
the difference is 50 degrees
20 degrees Fahrenheit = minus 6.6 degrees Celsius.
-50 degrees Fahrenheit = -45.5 degrees Celsius.
Then you get 400 mL of water of 20 oC
-4 degrees Fahrenheit.