is the gold-colored soil pure gold based on the specific heat values?, chemistry homework help

Question description

The specific heat of gold is 0.128 J/g.ºC. A gold-colored solid weighing 4.70 g absorbs 57.2 J of heat.
Its temperature rises from 25.0 ºC to 57.0 ºC. Calculate the specific heat of the gold-colored solid.
Is the gold-colored solid pure gold based on the specific heat values?