你知道水的摩尔质量是多少吗？

Do you know what the molar mass of water is?

摩尔质量是化学中一个重要的概念。

Molar mass is an important concept in chemistry.

化学家需要计算化合物的摩尔质量。

Chemists need to calculate the molar mass of compounds.

这个实验需要你知道每种元素的摩尔质量。

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

通过查表可以很容易找到元素的摩尔质量。

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

重于空气的气体的摩尔质量大于空气的.

Denser gases have molar mass greater than air.

除以18克每摩尔加上10克,除以溶质的摩尔质量。

Divided by 18 grams per mole plus 10 grams divided by the molecular weight in grams per mole.

如果我们求摩尔质量的话，我们的结果是907克每摩尔。

And if we solve for molecular weight, then we wind up with 907 grams per mole.

首先，我们先计算,固体的摩尔质量。

So first, let's just calculate the molecular weight of the solid.

用溶液法制备超高摩尔质量聚乙烯薄膜。研究了超高摩尔质量聚乙烯和聚乙烯共混对溶液凝胶成膜的条件以及薄膜力学性能的影响。

The effects of the blending of UHMWPE with PE on the the condition of the gel formation of the fil by solution method was discussed.