   Chapter 5, Problem 9PS

Chapter
Section
Textbook Problem

The initial temperature of a 344-g sample of iron is 18.2 °C. If the sample absorbs 2.25 kJ of energy as heat, what is its final temperature?

Interpretation Introduction

Interpretation:

The Final temperature of iron at definite mass has to be calculated

Concept Introduction:

Heat energy required to raise the temperature of 1g of substance by 1k.Energy gained or lost can be calculated using the below equation.

q=C×m×ΔT

Where,

q= energy gained or lost for a given mass of substance (m),

C =specific heat capacity

ΔT= change in temperature

Explanation

Given,

Specific heat capacity of iron =0.450J/g.K

Mass of iron =344g

q =2.25KJ

Tinitial=18.20C=291.35K

Substitute values in q=C×m×ΔT, as

2

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