Heating 50 g of CaCO₃ gives 22.4 g of CaO (CaCO₃ → CaO + CO₂; Ca = 40, C = 12, O = 16). What is the percentage yield?
Correct answer C. 80%
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MDCAT ECAT Chemistry MCQs
Page 39 of MDCAT ECAT Chemistry multiple-choice questions with answers. Tap an option to check yourself.
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- Gases 40
- Liquids 40
- Solids 40
- Chemical Equilibrium 40
- Reaction Kinetics 40
- Thermochemistry and Energetics 40
- Electrochemistry 40
- Fundamental Concepts of Chemistry 40
- Atomic Structure 39
- Chemical Bonding 39
- Alcohols and Phenols 38
- Industrial Chemistry 37
- Aldehydes and Ketones 37
- Alkyl Halides 37
- s- and p-Block Elements 37
- Chemistry of Hydrocarbons 36
- Fundamental Principles of Organic Chemistry 36
- Carboxylic Acids 36
- Transition Elements 35
- Macromolecules 35
Which factor is NOT a reason why the actual yield of a reaction is usually less than the theoretical yield?
Correct answer C. One reactant is used in excess
Diameter of an atom is in the order of
Correct answer C. 0.2nm
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