The difference in the temperatures between the room temperature and the melting point of Gallium is 9.8°C.
Express the room temperature of 68°F in °C.
[tex] C=\frac{5}{9} (F-32)\\ =\frac{5}{9} (68-32)\\ = 20^o C [/tex]
Find the difference between the melting point of Gallium and the room temperature.
[tex] \Delta T = (29.8^oC - 20^oC)\\ =9.8 ^oC [/tex]
The difference between the room temperature and the melting point of Gallium is 9.8 °C.