3 years ago

Most of the energy used in the United States comes from

1 answer:

6 0

Answer:

Energy in the United States comes mostly from fossil fuels: in 2010, data showed that 25% of the nation's energy originates from petroleum, 22% from coal, and 22% from natural gas.

Explanation:

It is really self explanitory

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the mol of Fe is 11,5/56 = 23/112 (mol)

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we have:

Fe2O3 + 3CO => 2Fe + 3CO2

23/112 69/112 23/56

=> the mol of Fe is 23/56 mol

=> the mass of Fe is 23/56.56 = 23 (g)

Explanation:

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