Trial Substance Mass (grams) AT ("C) Added Energy (Joules) 1 Hg 100.0 71.0 1,000.0 Hg 100.0 142 2,000.0 3 H,O 100.0 2.39 1,000.0 4. 100.0 4.78 2,000.0 1. Choose any two trials that use the same amount of energy but involve different substances and comment on whether the temperature change is the same in both trials? 2. The specific heat of water was determined to be 4.18 J/g.°C using the data from the table 3. Use the data from table 3 to determine the specific heat of mercury. 3. Complete the following sentence When the same amount of energy is added to two samples of different substances that have the same mass, the substance with the larger specific heat will have the (larger/smaller) temperature change. 4. If 20,000 J of energy are used to heat water by 4.00 °C, what is the mass of water?
Trial Substance Mass (grams) AT ("C) Added Energy (Joules) 1 Hg 100.0 71.0 1,000.0 Hg 100.0 142 2,000.0 3 H,O 100.0 2.39 1,000.0 4. 100.0 4.78 2,000.0 1. Choose any two trials that use the same amount of energy but involve different substances and comment on whether the temperature change is the same in both trials? 2. The specific heat of water was determined to be 4.18 J/g.°C using the data from the table 3. Use the data from table 3 to determine the specific heat of mercury. 3. Complete the following sentence When the same amount of energy is added to two samples of different substances that have the same mass, the substance with the larger specific heat will have the (larger/smaller) temperature change. 4. If 20,000 J of energy are used to heat water by 4.00 °C, what is the mass of water?
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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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Please help me answer questions 2,3and 4
Transcribed Image Text:**Model 3 – Heating Mercury and Water**
| Trial | Substance | Mass (grams) | ΔT (°C) | Added Energy (Joules) |
|-------|-----------|--------------|---------|-----------------------|
| 1 | Hg | 100.0 | 71.0 | 1,000.0 |
| 2 | Hg | 100.0 | 142.0 | 2,000.0 |
| 3 | H₂O | 100.0 | 2.39 | 1,000.0 |
| 4 | H₂O | 100.0 | 4.78 | 2,000.0 |
1. Choose any two trials that use the same amount of energy but involve different substances and comment on whether the temperature change is the same in both trials?
2. The specific heat of water was determined to be 4.18 J/g·°C using the data from the table. Use the data from table 3 to determine the specific heat of mercury.
3. Complete the following sentence:
When the same amount of energy is added to two samples of different substances that have the same mass, the substance with the larger specific heat will have the (larger/smaller) temperature change.
4. If 20,000 J of energy are used to heat water by 4.00 °C, what is the mass of water?
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