3 years ago

Biologists study the structural adaptations of organisms, which are

1 answer:

6 0

In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection.

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Based on the equation, how many grams of Br2 are required to react completely with 72.4 grams of AlCl3

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Answer: 131 g of bromine is required.

Explanation:

The balanced equation will be :

$2AlCl_3+3Br_2\rightarrow 2AlBr_3+3Cl_2$

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

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$\text{Number of moles}=\frac{72.4g}{133g/mol}=0.544moles$

According to stoichiometry :

2 moles of $AlCl_3$ require = 3 moles of $Br_2$

Thus 0.544 moles of $AlCl_3$ require= $\frac{3}{2}\times 0.544=0.816moles$ of $Br_2$

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