Mercury melts at 39 degree celsius and boils at 357 degree celsius . ordinarily it will exist in the
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We need to work out when both are liquid. Imagine a Venn diagramme type overlap.
-39 degrees Celsius to 78 degrees Celsius.
Note that the use of the degree centigrade was abrogated in 1954, and made into the SI derived coherent unit for Celsius temperature in 1960. Contrary, whilst very close in actual values, those two scales are defined very differently.
Centigrade scale was/is defined in terms of the freezing/melting point and boiling point of water at atmospheric pressure. Celsius is defined by a constant offset from the kelvin scale, which is defined by absolute zero and, until recently the triple point of water (which is definitely not at atmospheric pressure).
Explanation:
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