Choose whether the reaction is exothermic or endothermic. 4Al(s) + 3020w 2Al2O3(s) --Select--
V
2H2(g) + O2(g) → 2H2O(9) --Select--
N2(g) + O2(g) - 2NO(g) -Select--

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?