Similarly, molecular formulas have to have subscripts after the element name, not before.
类似的，分子式中的下标是在元素符号后边的，而不是前边。
On the left of the equation we write the molecular formulas of all the ingredients or reactants.
在反应式的左侧我们写上全部反应物的分子式。
Substances which have identical molecular formulas but different strucural formulas, are known as isomers.
凡具相同分子式但不同结构式的物质称为异构体。
A method of predicting vapor pressures of hydrocarbons from the normal boiling points and the molecular formulas is proposed.
提出一个只由正常沸点和分子式估算烃类物质蒸气压的方法。
Isomer: one of two or more substances with identical molecular formulas but different configurations, differing only in the arrangement of their component atoms.
同分异构体：亦称异构体。分子式相同但构型不同的两种或两种以上的物质，其差别只在于组成原子的排列不同。
Isomer: one of two or more substances with identical molecular formulas but different configurations, differing only in the arrangement of their component atoms.
同分异构体：亦称异构体。分子式相同但构型不同的两种或两种以上的物质，其差别只在于组成原子的排列不同。
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