Question

How many moles of hexachlorobenzene, C 6Cl 6, are in 4.45 g of C 6Cl6 (Molar mass = 282

g/mol)
O 0.0618 mol
O 0.0322 mol
O 1.27 10³ mol
O 0.0156 mol
O 0.0208 mol

Answer 1

To calculate the moles of hexachlorobenzene in 4.45 g, divide the mass by the molar mass, resulting in approximately 0.0156 mol. The correct answer is option: d) 0.0156 mol

Step-by-step explanation:

To find the number of moles of hexachlorobenzene (C₆Cl₆ ) in 4.45 g of the substance, use the molar mass as a conversion factor. First, divide the mass of hexachlorobenzene by its molar mass:

Number of moles = Mass of C₆Cl₆ (g) / Molar mass of C₆Cl₆ (g/mol)
Number of moles = 4.45 g / 282 g/mol

Number of moles = 0.0156 mol

Therefore, the number of moles of hexachlorobenzene in 4.45 g is approximately 0.0156 mol, when limited to the proper number of significant figures.