1.A is like a recipe for a chemical substance. (valence, formula, subscript, coefficient) 2
The in a formula tells the number of atoms of each element present. (valence, formula, subscript, coefficient)

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

Determine the reaction and balance the following equations urgent due in the morning

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as