Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:**Problem Statement:**
Calculate the amount of heat needed to melt 169 g of solid acetic acid \((\text{HCH}_3\text{CO}_2)\) and bring it to a temperature of 81.2°C. Be sure your answer has a unit symbol and the correct number of significant digits.
**Answer Field Description:**
- The answer input field is a rectangular box, where you can input your calculated value.
- Beside the input box, there is a panel with the following features:
- An icon to indicate scientific notation marked as \(x10\).
- A checkmark (✓) to submit the answer.
- An arrow (⟲) to reset the input field.
**Instructions for Calculation:**
1. Determine the latent heat of fusion for acetic acid and its specific heat capacity.
2. Use the formula \( q = m \cdot \Delta H_f + m \cdot c \cdot \Delta T \) to calculate the total heat required, where:
- \( q \) is the total heat energy.
- \( m \) is the mass of the substance.
- \( \Delta H_f \) is the heat of fusion.
- \( c \) is the specific heat capacity.
- \( \Delta T \) is the change in temperature.
3. Ensure the final answer is expressed with the correct unit and significant digits.
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