Change to kelvin: (a) 57 °C, (b) -120 °C. Change to degrees celsius: (c) 520 K.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Change to kelvin: (a) , (b) . Change to degrees celsius: (c) .
Need a reminder? The key ideaShow
and . A step of is the same size as a step of . A substance is a solid below its melting point, a liquid between its melting and boiling points, and a gas above its boiling point.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) .
Step 2. (b) .
Step 3. (c) .
Answer: , and .
Check. Every kelvin answer is positive, as it must be: nothing is colder than .
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