69. Follow the balanced equation: N2(g) + 3H2(g) → 2NH3(g)
An equal number of moles of nitrogen and hydrogen gases were added in a balloon. The volumeof the balloon is 2.00 L before any reaction occurs. Determine the volume of the balloon after thereaction is complete, assuming constant temperature.
(A) 0.67 L
(B) 1.00 L
(C) 1.33 L
(D) 2.00 L
(E) 4.00 L