How long does it take for hot water to cool down?
It takes 100 minutes or so to cool from 100 to 45 in a closed container, which is not sealed so you don’t get a vacuum. 50–45 20 min, but you said open pot, so it’s quicker, as the water cools.
What is the temperature of boiling water after 5 minutes?
After boiling a cup of water, I recorded its temperature every minute for thirty minutes. The data is graphed below, with the independent variable as time in minutes and the dependent variable as temperature.
How long does it take boiled water to cool to 80?
It takes 3 minutes or so to let the water cool down from 100 to 80.
How long does boiled water stay sterile?
Boiled water can be kept in sterilized, properly sealed containers in the refrigerator for 3 days or for 24 hours if kept at room temperature out of direct sunlight. From 4 months on, your baby can drink unboiled water.
What temperature do kettles boil to?
Water from the kettle will usually boil at slightly over 100 degrees Celsius, because of ‘impurities’ in the water, like minerals, which cause it to have a higher boiling temperature.
What happens to the temperature of water while it is boiling?
When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. … Therefore the temperature of the liquid remains constant during boiling. For example, water will remain at 100ºC while boiling.
Can I drink boiled water after 2 days?
You should avoid drinking water left open for a very long time. The water left overnight or for a long period of time in an open glass or container is home to numerous bacterias and is not safe for drinking. You never know how much dust, debris, and other small microscopic particles might have passed into that glass.
Why does water take so long to cool?
Water may seem to cool down much slower than it heats up because the heating up is an active process. I.e., when heating up water, you are putting it on a heat source which gives out a lot of energy in a short space of time.
Is 80 degrees water warm?
Pool water temperatures typically run between 78 and 82 degrees. Any cooler than 78 and you may come out of the pool shivering. … A temperature of 80 degrees is generally warm enough that children and senior citizens enjoy it but cool enough to make for an invigorating dip.