- #1
chrisg20
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Homework Statement
Given a volume of Al2O3, how many atoms of each element?
In summary, the number of atoms in a container can be determined by using Avogadro's number, which is approximately 6.022 x 10^23. The number of atoms can change due to chemical reactions, radioactive decay, or changes in temperature and pressure. Different substances will have different numbers of atoms in the same size container. The size of a container does not directly determine the number of atoms it can hold, but instead, the number of atoms is determined by the substance's molar mass and the number of moles present. The number of atoms in a container cannot be measured directly, but it can be estimated using mass, molar mass, and Avogadro's number.
Given a volume of Al2O3, how many atoms of each element?
- #2
tiny-tim
Science Advisor
Homework Helper
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welcome to pf!
hi chrisg20! welcome to pf!
tell us what you think, and then we'll comment
hi chrisg20! welcome to pf!
tell us what you think, and then we'll comment
- #3
chrisg20
- 2
- 0
I have the density of Al2O3 as 3.97 Mg/m3. The volume of the material is 25.45mm3. Since mass=density x volume, I can get the mass but don't know how to find the number of atoms from there.
1. How do you determine the number of atoms in a container?
The number of atoms in a container can be determined by using Avogadro's number, which is approximately 6.022 x 10^23. This number represents the number of atoms in one mole of a substance. By knowing the mass of the substance in the container and its molar mass, one can calculate the number of moles and therefore the number of atoms in the container.
2. Can the number of atoms in a container change?
Yes, the number of atoms in a container can change. Atoms can be added or removed from a container through chemical reactions, radioactive decay, or by changing the temperature and pressure of the container.
3. Do all substances have the same number of atoms in a container?
No, the number of atoms in a container depends on the substance and its molar mass. Different substances will have different numbers of atoms in the same size container.
4. What is the relationship between the size of a container and the number of atoms it can hold?
The size of a container does not directly determine the number of atoms it can hold. Instead, the number of atoms in a container is determined by the substance's molar mass and the number of moles present in the container.
5. Can the number of atoms in a container be measured directly?
No, the number of atoms in a container cannot be measured directly. However, it can be estimated by using mass and molar mass measurements and the Avogadro's number constant.
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