Nitrogen and hydrogen react to produce ammonia. N
2
(
g
)
+
3H
2
(
g
)
→
2NH
3
(
g
)
How many grams of hydrogen are needed to produce 15.0 mol of ammonia if the reaction goes to completion?

15.0 g

15.0 g

22.5 g

22.5 g

45.0 g

45.0 g

90.0 g