What is the theoretical yield of Calcium if we begin with 12.6 grams of Aluminium?

The question is incomplete, here is the complete question:

The given chemical reaction is:

What is the theoretical yield of Calcium if we begin with 12.6 grams of Aluminium?

The theoretical yield of copper is 44.48 grams

Explanation:

To calculate the number of moles, we use the equation:

    .....(1)

Given mass of aluminium = 12.6 g

Molar mass of aluminium = 27 g/mol

Putting values in equation 1, we get:

The given chemical equation follows:

By Stoichiometry of the reaction:

2 moles of aluminium produces 3 moles of copper

So, 0.467 moles of aluminium will produce = of copper

Now, calculating the mass of copper  from equation 1, we get:

Molar mass of copper = 63.5 g/mol

Moles of copper = 0.7005 moles

Putting values in equation 1, we get:

Hence, the theoretical yield of copper is 44.48 grams

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