2h2 + o2 --> 2h2o how many moles of oxygen would react completely with 6 moles of hydrogen? a. 2b. 3c. 4d.12

D. 12 moles

Explanation:

According to law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products must be same as the mass of reactants. The number of atoms of each element must be same on both sides of the equation. Thus a balanced chemical equation is written.

As can be seen from the chemical equation,

2 moles of hydrogen react with 1 mole of oxygen.

Thus 6 moles of hydrogen will react with= moles of oxygen.

im pretty sure its b