What is the mass of 1.7 moles of iron chloride FeCl3 (The units will be g but don't include those in your answer just give the number to one decimal place.)?

To find the mass of 1.7 moles of iron chloride (FeCl3), first calculate its molar mass. The molar mass of FeCl3 is approximately 162.2 g/mol (55.8 g/mol for Fe and 35.5 g/mol for each Cl, with three Cl atoms). Therefore, the mass of 1.7 moles is calculated as 1.7 moles × 162.2 g/mol = 276.7 g. The final answer is 276.7.