Gallium is a solid metal at room temperature but melts at 29.9 °C. If you hold gallium in your hand, it melts from body heat. How much heat must 2.5 g of gallium absorb from your hand to raise its temperature from 25.0 °C to 29.9 °C? The specific heat capacity of gallium is 0.372 J/g °C

 4.56 Joules

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 substance = 2.5 g

c = specific heat capacity =

Initial temperature  = = 25.0°C

Final temperature  =  = 29.9°C

Change in temperature ,

Putting in the values, we get:

The heat absorbed by gallium must be 4.56 Joules