It takes one oxygen to combine with two hydrogen atoms to form water. what is the mass ratio of oxygen to hydrogen? 1 to 2 4 to 1 8 to 1 2 to 1

8 to 1.

Explanation:

O₂ + 2H₂ → 2H₂O.

It is clear that one mole of oxygen combines with two moles of hydrogen atoms to form 2 moles of water.

So, the molar ratio of oxygen to hydrogen is (1 to 2).

So, the mass ratio of oxygen to hydrogen (32.0 g/4.0 g) = (8: 1).

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements