<complexType name="AmountOfSubstancePerAmountOfSubstanceMeasureType">
<annotation>
<documentation>Molar ratio or mole fraction: Dimensionless ratio of moles of one substance to moles of another. Used in chemistry, geochemistry, and materials science for expressing composition. Commonly expressed as percent or mol/mol.</documentation>
</annotation>
<simpleContent>
<extension base="diggs:DescriptorValueType">
<attribute name="uom" type="diggs:AmountOfSubstancePerAmountOfSubstanceUomEnumType">
<annotation>
<documentation>The unit of measure for molar ratio or mole fraction.</documentation>
</annotation>
</attribute>
</extension>
</simpleContent>
</complexType>
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