During a laboratory experiment, 46.54 grams of Al2O3 was formed when 02 reacted with aluminum metal at 300.0 K and 1.2 atm. What was the volume of 0 experiment?
302 + 4A1 - 2Al2O3 (5 points)
O
10.19 liters
11.67 liters
ООО
12.51 liters
0 13.96 liters

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 .

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

List four observations that indicate that a chemical reaction may be taking place