in this lab, we do not measure the amount of chlorine in sample. we need the amount of chlorine to determine the formula of the compound. how do we determine the amount of chlorine in the compound?

Two or more atoms that have been chemically bonded make up a molecule. A molecular formula is the chemical representation of a molecular compound that lists the types and quantities of atoms that make up each molecule.

We have 0.0281 moles H₂O.

We have 0.00936 moles Copper.

We have 0.00936 moles sulfate.

Mole ratio : For 1 mol Cu we have 1 mol sulfate and 3 moles H₂O.

The molecular formula is CuSO₄·3H₂O

After heating the sample lost 0.506 grams of mass

After reacting with aluminum wire, 0.595 g of Cu was recovered.

So, Moles H₂O = mass H₂O / molar mass H₂O

Moles H₂O = 0.506 grams / 18.02 g/mol

Moles H₂O = 0.0281 moles H₂O

Now, Moles Cu = 0.595 grams / 63.55 g/mol

Moles Cu = 0.00936 moles Cu

For 1 mol of Cu we have 1 mol (SO₄)⁻²

For 0.00936 moles Cu we have 0.00936 moles (SO₄)⁻²

We have 0.00936 moles CuSO₄.

Step 5: Calculate the molecular formula

The molecular formula is CuSO₄·H₂O

To find x we have to divide the number of moles H₂O by the number of moles CuSO₄

x = (0.0281 mol of H2O) / (0.00936 mol of CuSO₄)

x = 3.00

The molecular formula is CuSO₄·3H₂O.

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Here is the complete question " In this lab, we do not measure the amount of chlorine in the sample, We need the amount of chlorine to determine the formula of the compound. How do we determine the amount of chlorine in the compound? The mineral bonattite is known to be a copper sulfate hydrate. 2.000 grams was heated to release the water for form the anhydrate. The sample lost 0.506 g of mass. After reacting with aluminum wire, 0.595 g of copper was recovered. How many motes of water, copper and sulfate were in the compound? What is the mole ratio of these 3 components? What is the formula of bonattite?".