Step-by-step explanation:
You can use the equation Q = mc∆ø
where Q is the energy in J
m is the mass in kg
C specific heat capacity
∆ø is the change in temperature which is basically end temp - start temp
Substitute the values given in your table into the equation and find the unknown terms
Don't forget to do the unit conversions for the kJ to J (by multiplying by 10³) and the mass from g to kg (by dividing by 10³)
hope this was clear!