Consider two identical iron nails: one nail is heated to 95 °c, the other is cooled to 15 °c. the two nails are placed in a coffee cup calorimeter and the system is allowed to come to thermal equilibrium. what is the final temperature of the two nails

The heat released or absorbed by a substance is calculated through the equation,

H = mcpdT

where H is teh heat,

m is the mass,

Cp is the specific heat, and

dT is the temperature difference

In this item, since both nails are identical, m and cp for both nails are equal such that the equation can be expressed as,

mcp (95 - x) = mcp (x - 15)

where x is the final temperature. Solving for the value of x from the equation derived above will give us a final answer of 55 degrees C.

Answer: 55°