How many moles of H2 gas are generated when 4.0 moles of Na react? 2Na + 2H2O → 2NaOH + H2
1.0 mole
2.0 moles
3.0 moles
4.0 moles

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this