Achemist determines by measurements that 0.0900 moles of bromine liquid participate in a chemical reaction. calculate the mass of bromine liquid that participates be sure your answer has the correct number of significant digits.

Explanation:

It is known that number of moles equal mass divided by molar mass.

Mathematically,      No. of moles =

It is given that number of moles is 0.09 mol and molar mass of bromine is 79.904 g/mol.

Therefore, calculate the mass of bromine as follows.

           No. of moles =

                 0.09 mol =

                     mass = 7.191 g

Thus, we can conclude that the mass of bromine liquid that participates is 7.191 g.

b is the correct answer

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