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Questions and Answers
What is the definition of a mole?
What is the definition of a mole?
- The number of protons in one gram of ordinary matter
- The number of molecules in one gram of ordinary matter
- The number of neutrons in one gram of ordinary matter
- The number of atoms in one gram of ordinary matter (correct)
Which unit is used to measure the amount of substance in the International System of Units (SI)?
Which unit is used to measure the amount of substance in the International System of Units (SI)?
- Liter
- Gram
- Mole (correct)
- Second
What is the Avogadro number?
What is the Avogadro number?
- The number of atoms in one gram
- The number of grams in one mole
- The number of moles in one gram
- The number of elementary entities in one mole (correct)
Which of the following substances contains exactly one atom for each molecule of water?
Which of the following substances contains exactly one atom for each molecule of water?
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What was the definition of a mole before the 2019 redefinition of SI base units?
What was the definition of a mole before the 2019 redefinition of SI base units?
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