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Introductory Chemistry: A Foundati...

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

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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The specific heat capacity of graphite is 0.71 J/g C. Calculate the energy required to raise the temperature of 2.4 moles of graphite by 25.0 °C.

Interpretation Introduction

Interpretation:

The energy required to raise the temperature of graphite 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 specific heat capacity of graphite is 0.71 J/g C, number of moles of graphite is 2.4 mol and the temperature of graphite is increased by 25.0 C.

Calculation:

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

Q=msΔT

To calculate the heat required, first calculate the mass of graphite as follows:

n=mM

Here, n is number of moles, m is mass and M is molar mass, on rearranging,

m=n×M

Molar mass of graphite is 12.011 g/mol, putting the values,

m=(2

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