Question

hlep

Answer 1

the equation is balanced (always check first).

so look at your molecules. you have 4 molecules of Br2 and 3 molecules of C2H4.

now, looking at the equation, the reaction uses up 1 molecule of Br2 and 1 molecule of C2H4 to make each molecule of C2H4Br2. so which reactant will you run out of first? that'll be your limiting reactant.

Answer 2

this equation is balenced. that should help you get started

Answer 3

period