In figure , heat is added to a pure subs...

In figure , heat is added to a pure substance in a closed container rate. A graph of the temperature of the substance as a function of time is shown here , If `L_(F)` = heat of fusion and `L_(V)`= heat of vaporization . What is the value of the ratio `L_(V)//L_(F)` for this substance ?

`5.0`

`4.5`

`7.2`

`3.5`

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`L prop` number of blocks

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