A piece of aluminum of unknown mass that starts at 95°C is immersed in a calorimeter with 400 g of water at 25.0°C, and the resultant temperature of the water is 35.0°C. What is the mass of the aluminum?

Question

Quizplus · Accepted Answer

The heat lost by aluminum equals the heat gained by water. Using the formula $m \cdot c \cdot \Delta T$ for both substances and solving for the mass of aluminum, we find it to be approximately 309.9 g.

A Piece of Aluminum of Unknown Mass That Starts at 95°C