If the enthalpy change for the combustion 2. 00 g of propane, C3H8, was determined to be −102. 5 kj by calorimetry, what is the calculated enthalpy change for the combustion of one mole of propane under the same conditions?

answer

Explanation:

Enthalpy of combustion of gas at standard conditions (nominally 298.15 K, 1 atm.) -2207.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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