In order to calculate the number of moles of bromine liquid produced, we need to know the molar mass of bromine (Br). The molar mass of bromine is 79.904 g/mol.
To calculate the number of moles, we divide the mass of bromine (6.6g) by its molar mass (79.904 g/mol):
Number of moles = Mass of bromine / Molar mass of bromine
= 6.6 g / 79.904 g/mol
= 0.08255 mol
However, since the number of significant digits in the given mass is 2, we should round the final answer to 2 significant digits. Therefore, the correct answer is:
Number of moles of bromine liquid produced = 0.082 mol