Answer:
1 (=nothing), 3, 3, 1 (= nothing)
Explanation:
(nothing means you dont have to write anything down)
Answer:
B i'm pretty sure, correct me if i'm wrong.
Explanation:
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.
Also called axis of abscissas. (in a plane Cartesian coordinate system) the axis, usually horizontal, along which the abscissa is measured and from which the ordinate is measured. (in a three-dimensional Cartesian coordinate system) the axis along which values of x are measured and at which both y and z equal zero.