Warning! Long Answer. Mole percent is the percentage that the moles of a particular component are of the total moles that are in a mixture. MOLE FRACTION Let’s start with the definition of mole fraction. Mole fraction chi (the Greek letter chi) is the number of moles of a given component of a mixture divided by the total number of moles in the mixture. n_t = n_a + n_b + n_c + … , where n_t ... More @Wikipedia
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