Do you know what the molar mass of water is?

你知道水的摩尔质量是多少吗？

Molar mass is an important concept in chemistry.

摩尔质量是化学中一个重要的概念。

Chemists need to calculate the molar mass of compounds.

化学家需要计算化合物的摩尔质量。

This experiment requires you to know the molar mass of each element.

这个实验需要你知道每种元素的摩尔质量。

You can easily find the molar mass of elements by looking it up in a table.

通过查表可以很容易找到元素的摩尔质量。

Denser gases have molar mass greater than air.

重于空气的气体的摩尔质量大于空气的.