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单词 mole fraction
释义
mole fraction
Physics

  • Symbol X. A measure of the amount of a component in a mixture. The mole fraction of component A is given by XA=nA/N, where nA is the amount of substance of A (for a given entity) and N is the total amount of substance of the mixture (for the same entity).

Chemistry

  • A measure of the amount of a component in a mixture. The mole fraction of component A is given by XA = nA/N, where nA is the amount of substance of A (for a given entity) and N is the total amount of substance of the mixture (for the same entity).

Chemical Engineering

  • The ratio of the number of moles of a component in a mixture to the total number of moles in the mixture expressed as a fraction. The symbol x is used for the mole fraction of liquids and y is used for vapour. The sum of the mole fractions in the liquid or in the gas phase is equal to unity.
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