100 POINTS PLEASE ANSWER! Read the following chemical equation.

Fe + O2 → Fe2O3

Which of the following fractions can be used for the mole ratio to determine the mass of Fe from a known mass of Fe2O3?

four over two
three over two
two over three
two over four

Four over

Explanation:

fraction can be used for the mole ratio

Answer would be 4/2

Explanation:

A is the best answer choice because it was between A and D but 2 is not the denominator so it couldnt be D

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer