The reaction between copper and sulfur is represented by the chemical equation shown below. What is the theoretical mass in grams of Cu2S, 159.16g/mol, formed from 4.28 moles of copper? report in three significant figures. 2 Cu + S -> Cu2S​

i believe it is c.) 1575 j.

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 : )