Questions Q1. How many calories would be needed to vaporize 200.00 g water that you heated to its boiling point? Heat of vaporization for water is 540 cal/g. Show work Q2. What is the total amount of calories needed to 1) heat 200.00 g f water from 21.5 °C to its boiling point, and 2) to vaporize it? Show work
Questions Q1. How many calories would be needed to vaporize 200.00 g water that you heated to its boiling point? Heat of vaporization for water is 540 cal/g. Show work Q2. What is the total amount of calories needed to 1) heat 200.00 g f water from 21.5 °C to its boiling point, and 2) to vaporize it? Show work
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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
Transcribed Image Text:**Educational Content: Heat of Fusion and Vaporization**
**Concepts:**
The energy needed to convert a solid into a liquid or a liquid back into a solid is called the *heat of fusion*. For water, this value is 80 calories per gram. The energy required to convert a liquid into a gas or a gas back into a liquid is called the *heat of vaporization*. For water, this value is 540 calories per gram.
**Questions:**
**Q1.** How many calories would be needed to vaporize 200.00 g of water that you heated to its boiling point? Heat of vaporization for water is 540 cal/g. *Show work.*
**Q2.** What is the *total amount of calories* needed to:
1) Heat 200.00 g of water from 21.5 °C to its boiling point, and
2) Vaporize it? *Show work.*
**Q3.** Compare the magnitudes of heat calories needed to heat 200.00 g of water from 21.5 °C to its boiling point and to vaporize all 200.00 g at its boiling point. Which one is bigger?
**Q4.** Why is burning from steam at 100°C a lot worse than burning from water at 100°C?
*Lab 7 pg. 7*
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