A tree consumes 30 grams of water (H20). How many moles of Oxygen (O2) will the tree produce?

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 : )

there are two significant figures.

yes the answer is total mass in unchanged   : )