How many moles of anhydrous copper sulfate is produced when 6.4 moles of hydrated copper sulfate is heated

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6.4 moles

Explanation:-

The word 'Anhydrous' means no water of crystallization is present in the chemical formula.

The formula for anhydrous copper sulphate is CuSO4.

The word 'Hydrated' means water of crystallization is present in the chemical formula.

The formula for hydrated copper sulphate is CuSO4.5H2O

The balanced chemical equation for this reaction is

CuSO4.5H2O --> CuSO4 + 5 H2O

From the equation we can see that

1 mole of CuSO4.5H2O gives 1 mole of CuSO4

∴ 6.4 moles of CuSO4.5H2O gives 6.4 moles of CuSO4

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but