How many liters of oxygen are needed to exactly react with 19.8 g of methane at stp? ch4(g) + 2 o2(g) → co2(g) + 2 h2o(l)?

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 : )