the number of moles in 6.2g of sodium oxide
mols = grams/molar mass.
To find the number of moles in 6.2g of sodium oxide, you need to use the concept of molar mass and the formula of sodium oxide, Na2O.
1. Begin by determining the molar mass of sodium oxide (Na2O).
- The atomic mass of sodium (Na) is approximately 23g/mol, and there are two sodium atoms in sodium oxide, so the total mass contribution from sodium is 2 × 23g/mol = 46g/mol.
- The atomic mass of oxygen (O) is approximately 16g/mol, and there is one oxygen atom in sodium oxide. Thus, the total mass contribution from oxygen is 1 × 16g/mol = 16g/mol.
- Add the mass contributions of sodium and oxygen to find the molar mass of sodium oxide, which is 46g/mol + 16g/mol = 62g/mol.
2. Use the molar mass to convert grams to moles.
- To convert grams to moles, divide the given mass by the molar mass.
- In this case, divide 6.2g by the molar mass of sodium oxide (62g/mol):
Moles = Mass / Molar mass
= 6.2g / 62g/mol
= 0.1 mol
Therefore, there are 0.1 moles of sodium oxide in 6.2g.