Mass fraction (chemistry)

In chemistry, the mass fraction $w_i$ is the ratio of one substance with mass $m_i$ to the mass of the total mixture $m_{tot}$ , defined as

The sum of all the mass fractions is equal to 1:

Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (frequently, though erroneously, called percentage by weight, abbreviated wt%). It is one way of expressing the composition of a mixture in a dimensionless size; mole fraction (percentage by moles, mol%) and volume fraction (percentage by volume, vol%) are others.

单词	Percentage by weight
释义	Percentage by weight 英语百科 Mass fraction (chemistry) In chemistry, the mass fraction $w_i$ is the ratio of one substance with mass $m_i$ to the mass of the total mixture $m_{tot}$ , defined as The sum of all the mass fractions is equal to 1: Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (frequently, though erroneously, called percentage by weight, abbreviated wt%). It is one way of expressing the composition of a mixture in a dimensionless size; mole fraction (percentage by moles, mol%) and volume fraction (percentage by volume, vol%) are others.
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Percentage by weight

Mass fraction (chemistry)