객관식
Which of the following is a definite indicator of a chemical change?
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- 1. Intro to General Chemistry3h 46m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- The Electron Configuration Review16m
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- Group 1A and 2A Reactions7m
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- Nitrogen Family Reactions12m
- Oxides, Peroxides, and Superoxides12m
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- Noble Gas Compounds3m
- 24. Transition Metals and Coordination Compounds3h 19m
- Atomic Radius & Density of Transition Metals11m
- Electron Configurations of Transition Metals7m
- Electron Configurations of Transition Metals: Exceptions11m
- Paramagnetism and Diamagnetism10m
- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
- Naming Coordination Compounds22m
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- Isomerism in Coordination Complexes17m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
- Crystal Field Theory: Octahedral Complexes5m
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- Crystal Field Theory: Square Planar Complexes4m
- Crystal Field Theory Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
1. Intro to General Chemistry
Chemical Properties
Multiple Choice
A calorie and a kilocalorie are both units of energy. How many calories are equivalent to one kilocalorie?
A
1 calorie
B
1000 calories
C
100 calories
D
10,000 calories
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검증된 단계별 안내1
Understand the units involved: a calorie (cal) is a unit of energy, and a kilocalorie (kcal) is also a unit of energy but represents a larger amount.
Recall the prefix 'kilo-' in the metric system means 1000 times the base unit.
Therefore, 1 kilocalorie (kcal) is equal to 1000 calories (cal).
Express this relationship mathematically as: \(1\ \text{kcal} = 1000\ \text{cal}\).
Use this conversion factor to convert between kilocalories and calories whenever needed.
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