   Chapter 10, Problem 23QAP ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
3 views

# If 8.40 kJ of heat is needed to raise the temperature of a sample of metal from 15 °C to 20 °C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 25 °C to 40 °C?

Interpretation Introduction

Interpretation:

The heat required to raise the temperature of metal sample from 25 C to 40 C should be calculated.

Concept Introduction:

The specific heat is defined as the amount of heat per unit mass needed to raise the temperature by one degree Celsius.

It is mathematically represented as follows:

Q=msΔT

Here, Q is heat, m is mass, s is specific heat capacity and ΔT is change in temperature.

Explanation

Given Information:

The heat released is 8.40 kJ, initial temperature is 15 C and final temperature is 20 C

Calculation:

The specific heat capacity can be calculated using the following equation:

Q=msΔT

On rearranging,

s=QmΔT

Putting the values,

s=8.40 kJm(2015) C=1.68 kJm C.....

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