How can I find the number of mole of 0.25g of CuSO4?
determine the formula mass of copper(II)sulfate
then moles=mass/formula mass
To find the number of moles in 0.25g of CuSO4 (copper sulfate), you need to use its molar mass.
Step 1: Find the molar mass of CuSO4.
The molar mass can be calculated by adding up the atomic masses of each element in the compound.
- Cu (copper) has a molar mass of 63.55g/mol.
- S (sulfur) has a molar mass of 32.07g/mol.
- O (oxygen) has a molar mass of 16.00g/mol. Since there are four oxygen atoms in CuSO4, the total mass of oxygen is 4 x 16.00 = 64.00g/mol.
Adding up the masses: 63.55 + 32.07 + 64.00 = 159.62g/mol.
Step 2: Calculate the number of moles.
To calculate the number of moles, divide the mass of the substance (in grams) by its molar mass:
moles = mass (g) / molar mass (g/mol).
moles = 0.25g / 159.62g/mol.
Calculating this gives us: moles = 0.001565 mol.
Therefore, there are approximately 0.001565 moles of CuSO4 in 0.25g.
To find the number of moles of a substance, you can use the formula:
moles = mass (in grams) / molar mass (in g/mol)
To find the molar mass of CuSO4, we need to add up the atomic masses of copper (Cu), sulfur (S), and four oxygen (O) atoms.
The atomic mass of copper (Cu) is 63.55 g/mol.
The atomic mass of sulfur (S) is 32.07 g/mol.
The atomic mass of oxygen (O) is 16.00 g/mol.
Next, we need to multiply the atomic masses by the number of atoms in the chemical formula:
Cu: 63.55 g/mol x 1 = 63.55 g/mol
S: 32.07 g/mol x 1 = 32.07 g/mol
O: 16.00 g/mol x 4 = 64.00 g/mol
Now, add up these values to find the molar mass of CuSO4:
Molar mass of CuSO4 = 63.55 g/mol + 32.07 g/mol + 64.00 g/mol = 159.62 g/mol
Finally, we can calculate the number of moles of CuSO4:
moles = mass / molar mass
moles = 0.25 g / 159.62 g/mol
Therefore, the number of moles of 0.25g of CuSO4 is approximately 0.00157 mol (rounded to five decimal places).