Answer:
I can't say that it is definitely write.
HHH
H-C-C-C
Number of moles of FeCl2 used = mass/ molar mass
Number of moles = 507/126.751 = 4.
If one mole of Fe reacts with two moles of sodium
Then 4 moles of Fe produces 8 moles of sodium.
Number of moles of sodium = mass/molar mass
Molar mass of sodium chloride = 23 +35.5 = 58.5 g/mol
Hence mass = 8 * 58.5 = 468 g. Hence Option A.
There are 5 significant figures in the following number. All of the numbers essentially are significant.
The chemical reactions necessary are unable to occur without the addition of different ingredients
