Answer:
470.4 g
Explanation:
Data Given:
No. of moles of iron sample = 8.4 mole
mass of iron sample = ?
Solution
To find mass of sample mole formula will be used
mole formula
no. of mole = mass in grams / molar mass
rearrange the above equation for mass
mass in grams = no. of mole x molar mass . . . . . (1)
As we know
Molar mass of Iron (Fe) = 56 g/mol
Put values in equation 1
mass in grams = 8.4 mol x 56 g/mol
mass in grams = 470.4 g
mass of 8.4 mole sample of iron = 470.4 g
