Question

A chemical reaction that produces water molecules is

2H₂ +O₂ → 2H₂O

This reaction releases 570 kJ for each mole of oxygen moleculesthatis consumed. The relativistic relation between mass and energythenimplies that the mass of two hydrogen molecules plus the massof oneoxygen molecule is slightly larger than the mass of twowatermolecules. Find this mass difference.



kg

PLEASE NOTE, THE ANSWER IS NOT 6.3e-12