The amount of energy gained : 5016 J
Further explanation
Heat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
mass water = 40 g
c water = 4.18 J/g C
∆T = temperature difference = 50 - 20 = 30 C
Heat gained :
[tex]\tt Q=40\times 4.18\times 30\\\\Q=5016~J[/tex]
