The chromatogram below shows the separation of components in an over-the-counter pain reliever.

1: acetaminophen, tr 3.97 min, w1/2 0.12 min 2: caffeine, tr 6.15 min, w1/2 0.21 min 3: benzoic acid, tr 9.73 min, w1/2 0.35 min 4: aspirin, tr 14.8 min, w1/2 0.73 min

calculate the resolution r between acetaminophen and caffeine.

calculate the number of theoretical plates n for the peaks of acetaminophen and caffeine

Nitric oxide (no) can be formed from nitrogen, hydrogen and oxygen in two steps. in the first step, nitrogen and hydrogen react to form ammonia: n2(g) + 2 h_2(g) rightarrow 2 nh_3 (g) delta h = -92. kj in the second step, ammonia and oxygen react to form nitric oxide and water: 4 nh_3(g) + 5 o_2(g) rightarrow 4no(g) + 6 h_2o(g) delta h = -905. kj calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

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Label a-f based on the table using c for concentrated and d for dilute