4Al + 302 → 2A1,03
5. If 3.17 g of aluminum, Al, is allowed to react with 2.55 g of Oz, how many grams of
aluminum oxide will be produced? (Hint: Must determine limiting reactant.)
(molar mass Al = 26.98, molar mass O2 = 32.00, molar mass Al2O3 = 101.96)

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

explanation: