Find the molar mass of CuSO4
The Correct Answer and Explanation is:
To calculate the molar mass of copper(II) sulfate (CuSO4), we need to sum the atomic masses of all the elements present in the compound. Here is the breakdown:
- Copper (Cu): The atomic mass of copper is 63.55 g/mol.
- Sulfur (S): The atomic mass of sulfur is 32.07 g/mol.
- Oxygen (O): The atomic mass of oxygen is 16.00 g/mol. Since there are four oxygen atoms in CuSO4, the contribution from oxygen is 4 * 16.00 = 64.00 g/mol.
Now, let’s add these values together:
- Copper: 63.55 g/mol
- Sulfur: 32.07 g/mol
- Oxygen: 64.00 g/mol (4 * 16.00)
The total molar mass of CuSO4 is:
63.55 + 32.07 + 64.00 = 159.62 g/mol.
Explanation:
The molar mass of a compound is calculated by adding the atomic masses of each element in the formula. Since CuSO4 consists of one copper atom, one sulfur atom, and four oxygen atoms, we multiply the atomic mass of each element by the number of atoms it has in the compound. Copper contributes 63.55 g/mol, sulfur contributes 32.07 g/mol, and the four oxygen atoms contribute 64.00 g/mol. The total gives us the molar mass of CuSO4, which is 159.62 g/mol.
This value is essential in stoichiometry calculations, where knowing the molar mass allows you to convert between grams and moles of CuSO4. For example, if you were to perform a reaction involving CuSO4, the molar mass would help you calculate how much of the compound is needed to react with a given amount of another substance.
