Chapter 17, Problem 72A

Interpretation Introduction

Interpretation: Three sources of error in experiments that use foam cups as calorimeter should be named.

Concept Introduction: The measurement of released or absorbed energy for physical or chemical change is said to be calorimetry. The device that is used measure this released or absorbed energy in heat form is said to be calorimeter.

Explanation of Solution

Controlling heat transfer to the surrounding air and equipment is extremely difficult in calorimetry experiments. The number of calories transferred from a burning substance depends on the substance's identity and mass. Errors in mass measurements, temperature measurements, and heat loss in calorimetry analysis are very common.