Question

If 0.871 g of a metal thought to be gold uses 1.47 J of energy to heat it from 25.2°C to 38.3 degrees * C . Confirm that the metal is gold. The specific heat of gold is .201J / g Your work must be shown to justify your answer.

Answer 1

Step-by-step explanation:

Given that,

Mass of metal, m = 0.871 g

Heat, Q = 1.47 J

The temperature increases from 25.2°C to 38.3°C. We know that, heat released is given by :

`Q=mc\Delta T\\\\c=(Q)/(m\Delta T)\\\\c=(1.47)/(0.871* (38.3-25.2))\\\\c=0.128\ J/g^(\circ) C`

Hence, the metal is made up of gold.