4fe(s)+3o2(g)→2fe2o3(s) how many grams of fe2o3 are produced when 12.0 of iron rusts

Mass = 10.1 g

Explanation:

Given data:

Mass of Fe₂O₃ produced = ?

Mass of iron rust = 12.0 g

Solution:

Chemical equation:

4Fe + 3O₂    →  2Fe₂O₃

Number of moles of iron:

Number of moles = mass/ molar mass

Number of moles = 12.0 g/ 55.85 g/mol

Number of moles = 0.215 mol

Now we will compare the moles of iron and Fe₂O₃ .

                     Fe            :          Fe₂O₃

                      4             :              2

                       0.215     :          2/4×0.125 = 0.063 mol

Mass of  Fe₂O₃ :

Mass = number of moles × molar mass

Mass = 0.063 mol × 159.7 g/mol

Mass = 10.1 g

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

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