Posted by Claudia on Monday, October 18, 2010 at 11:46am.
First, you need to note the correct spelling of celsius.
A mp -10 C, bp 57 C.
B mp -67 C, bp 15 C.
A is a solid below -10 C, melts at -10 and is a liquid between -10 and 57 C, boils at 57 C and becomes a vapor at 57 and above.
Same analysis for B.
I think you can figure it out from that information.
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