Question
Which of the following processes will determine the number of atoms in a sample?
Dividing the mass of the sample by its molar mass
Multiplying the mass of the sample by its molar mass
Dividing the number of moles of the sample by Avogadro's number
Multiplying the number of moles of the sample by Avogadro's number
Dividing the mass of the sample by its molar mass
Multiplying the mass of the sample by its molar mass
Dividing the number of moles of the sample by Avogadro's number
Multiplying the number of moles of the sample by Avogadro's number
Answers
GPT-4o mini
To determine the number of atoms in a sample, you can use the following process:
**Multiplying the number of moles of the sample by Avogadro's number.**
So, the correct option is:
- **Multiplying the number of moles of the sample by Avogadro's number.**
This is because Avogadro's number (approximately \(6.022 \times 10^{23}\)) gives the number of entities (atoms, molecules, etc.) in one mole of a substance. Therefore, if you know the number of moles, multiplying by Avogadro's number will yield the total number of atoms in the sample.
The other options do not correctly determine the number of atoms in a sample. Specifically:
- **Dividing the mass of the sample by its molar mass** gives the number of moles, not atoms directly.
- **Multiplying the mass of the sample by its molar mass** is not relevant for calculating the number of atoms.
- **Dividing the number of moles of the sample by Avogadro's number** would give a very small number that does not represent the number of atoms.
**Multiplying the number of moles of the sample by Avogadro's number.**
So, the correct option is:
- **Multiplying the number of moles of the sample by Avogadro's number.**
This is because Avogadro's number (approximately \(6.022 \times 10^{23}\)) gives the number of entities (atoms, molecules, etc.) in one mole of a substance. Therefore, if you know the number of moles, multiplying by Avogadro's number will yield the total number of atoms in the sample.
The other options do not correctly determine the number of atoms in a sample. Specifically:
- **Dividing the mass of the sample by its molar mass** gives the number of moles, not atoms directly.
- **Multiplying the mass of the sample by its molar mass** is not relevant for calculating the number of atoms.
- **Dividing the number of moles of the sample by Avogadro's number** would give a very small number that does not represent the number of atoms.