How much heat is required to change 48.5 liquid mercury (Hg) at 400 K to vapor at a 700 K? The boiling point of mercury is 629.88 K -88 kj

-204 kj

16.2 kj

30 kj

29 kj

4.91 kJ

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q = Heat absorbed = ?

m= mass of mercury = 48.5 g  = 0.0485 kg

c = specific heat capacity =

L = heat of vaporization = 59.2 kJ

Initial temperature of liquid mercury = = 400 K

Final temperature of mercury vapor =  = 700 K

Putting in the values, we get:

aluminum

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