First, you would need to find the chemical formula for aluminum chloride. Becuase aluminum is [tex] Al^{+3} [/tex] and chloride is [tex] Cl^{-1} [/tex], your equation would be Al[tex] Cl_{3} [/tex]
The chemical formula tells us how much of each element is in the compound. Because we now know that there is one aluminums and 3 chlorides, multiply Al by 34.0 g once and Cl by 39.0 g three times. 34.0g + 3( 39.0g). Your answer turns out to be 151 g Al[tex] Cl_{3} [/tex]
Hope this helps!
