The correct answer is oceanic crust, 80 km, Hope this helps let me know.
You have already gotten the balanced equation. And the ratio of mol number of reactants and production is the ratio of coefficient. So there is 6.4/8*11=8.8 mol oxygen needed. The mass is 8.8*32=281.6 g.
Answer:
C they are moving away from each other
Explanation:
