Question 167829
The energy required to heat a substance is given by the formula
E = m x c x (delta)t where
E = Energy in J
m = Mass in kg
c = specific heat in J kg−1 K−1 
and (delta) T is the difference between the two temperatures.
The specific heat of aluminium (according to wikipedia is 897 J kg−1 K−1 so
E = m x c x (delta)t
 = 48.3/1000 x 897 x (79.9 - 55.0)
 = 48.3/1000 x 897 x 24.9
 = 1080 Joules