Consider the reaction N₂(g) + 3 H₂(g) → 2 NH₃(g). A sealed 1.00-L container initially contains 5.00 moles N₂ and 5.00 moles H₂. After 25.0 s, 1.50 moles NH₃(g) is formed. For this time period calculate
a) the rate of change of [H₂]