A toy soldier made of lead has an aluminium pedestal and is placed in a holder containing benzene which is at 22 degreed celsius. The masses of the benzene and lead are both 500g. The specific heat capacity of the benzene, lead and aluminium are respectively 1716, 130 and 909 joules per kg degrees celsius. If the soldier and its pedestal is initially at standard temporature (0 degrees celsius) calculate the mass of the aliminium pedestal, if the final temporature is 15 degrees celsius?