How many grams of Fe2O3 are formed when 51.3 grams of iron, Fe, react completely with oxygen, O2? 4 Fe + 3 O2 --> 2 Fe2O3

73.4 g of are formed when 51.3 grams of iron react completely with oxygen.

Explanation:

To calculate the moles :

The balanced chemical reaction is:

As is the limiting reagent as it limits the formation of product.

According to stoichiometry :

4 moles of produce = 2 moles of

Thus 0.92 moles of will produce=  of

Mass of

Thus 73.4 g of are formed when 51.3 grams of iron react completely with oxygen.

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 : )