Consider the following balanced chemical equation. 2 C 8H 18 25 O 2 ---> 16 CO 2 18 H 2O How many grams of oxygen (O 2) are needed to react with 22 grams of octane (C 8H 18)

the awnser is group 12

answer;

18.5 seconds

explanation;

velocity is distance covered per unit time; it is given by displacement divided by time.

thus; time = displacement/velocity

total time = total displacement/velocity

total distance = 5000 meters south

total time = 5000/4.5

                  = 1111.11 seconds

but; 1 minute = 60 sec

thus; 1111.11 /60

                = 18.51 seconds

thus; the time taken is 18.5 seconds