In the reaction 2H2 + O2 --> 2H2O, how many moles of oxygen are required to fully react with 6.0 mol of hydrogen? A) 1.0 mol
B) 2.5 mol
C) 3.0 mol
D) 7.5 mol

Actually Welcome to the Concept of the Stochiometry.

Hence, here we can clearly see that, for 2 moles of Hydrogen, we need 1 mole of oxygen molecules,

so, then 6 moles of Hydrogen we need, 3 moles of Oxygen.

hence option c.) 3 mole

i'm pretty sure its b i might be wrong though!

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.