Iron (II) sulfide can be produced by combining solid iron with sulfur and heating both together. The reaction that occurs is balanced below: 8

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )

its b it was a compound