The mass of lead is to be calculated when 52 .5 cal heat is released as the metal cools from 35.5 ° C to 25.0 ° C . Concept introduction: Heat is present in the molecule as the energy due to motions in the molecule. This heat is expressed in the units of calories ( cal ) or joules ( J ) . The specific heat capacity of a molecule is defined as the heat is required to increase the temperature of the substance by 1 ° C . The formula used to calculate the heat gained or lost by the substance is given below as, q = m c Δ T

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Chapter 2, Problem 76E

Interpretation Introduction

Interpretation:

The mass of lead is to be calculated when 52.5 cal heat is released as the metal cools from 35.5°C to 25.0°C.

Concept introduction:

Heat is present in the molecule as the energy due to motions in the molecule. This heat is expressed in the units of calories (cal) or joules (J). The specific heat capacity of a molecule is defined as the heat is required to increase the temperature of the substance by 1°C. The formula used to calculate the heat gained or lost by the substance is given below as,

q=mcΔT

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