Question

2 Li + 2 H20 ---------> 2 LiOH + H2 How many moles of hydrogen gas are produced from 5.00 moles of water ?

Answer 1

the balanced reaction tells you that every time you use 2 moles of water, you'll make 2 moles of hydrogen gas. Take that ratio and predict how many moles of hydrogen gas you'll get from FIVE moles of water

Answer 2

he meant to say 2 moles H2O --> 1 mole of H2

Answer 3

^right, the ratio is 2:1, not 2:2