I believe the answer is concentration
Sorry if I’m wrong hope this helps
Answer:
They form when plates collide. I hope this helps you!
It would be 3C + 4H2 -> C3H8
The ratio of mole number of the reactants and products is equal to the coefficients. So the answer is a. 18.75 mol. b. 35.1 g. c. 1.38 * 10^5 g.