How many grams of oxygen were used if 3.0 moles of aluminum oxide are produced

143.9946 g

Explanation:

Silicon tetrachloride gas reacts with solid magnesium metal producing solid silicon and solid magnesium chloride.

SiCl₄(g) + Mg(s) → Si(s) + MgCl₂(s)

Explanation:

The reaction of SiCl₄(g) with Mg(s) produce Si(s) and MgCl₂(s). A way to write a word equation could be:

Silicon tetrachloride gas reacts with solid magnesium metal producing solid silicon and solid magnesium chloride.

The unbalanced formula equation including physical states is:

SiCl₄(g) + Mg(s) → Si(s) + MgCl₂(s)