氢气的分子式为H2，它是一种无色、无溴和无味的气体。
Hydrogen is referred to as H2. It is a colourless, odourless and tasteless gas.
一种甾醇，分子式为C29 H48o，从大豆或卡拉巴豆中提取。
A sterol, C29H 48o, obtained from soybeans or Calabar beans.
最后确定样品可能是飞燕草色素-3-葡糖苷，分子式为C21H21O12。
At last confirming the pigment was delphinidin-3-O-glucoside, the molecular formula is C21H21O12.
固态、液态和气态在化学性质上彼此没有差别，都是由分子式为H2O的分子构成的。
Chemically there is no difference between the gas, the liquid, and the solid, all of which are made of molecules with formula H2O. And this is true of other chemical substances.
乙烷一种无色无味的气态链烷，分子式为c2h6，是天然气的组成成分，可用作燃料或。
A colorless, odorless gaseous alkane, C2H6, that occurs as a constituent of natural gas and is used as a fuel and a refrigerant.
一种无色固体醇，分子式为CH3 (CH2)11oh，用于制作合成洗涤剂和药物。
A colorless solid alcohol, CH3 (CH 2) 11oh, used in synthetic detergents and pharmaceuticals.
一种无色粘稠吸水性液体，分子式为CH3CHOHCH2oh，用于水力流体的防冻剂，也可作为溶剂。
A colorless viscous hygroscopic liquid, CH3CHOHCH 2oh, used in antifreeze solutions, in hydraulic fluids, and as a solvent.
其分子式为O3，是氧气的同素异形体，具有它自身的独特性质，在自然条件下，臭氧是略带有特殊新鲜气味的淡蓝色气体。
Its Molecular Formula for ozone, oxygen is the same allotrope, with its own unique character, in natural conditions, the ozone is slightly special light blue fresh smell of gas.
重要的是记住分子式是代表中性化合物，正负电荷加和为零。
What is important to remember is that the formulas represent neutral compounds where the positive and negative charges add to zero.
辛烷一种具有这种分子式的同分异构的石蜡氢碳化合物，此式为c8h18，在石油中发现，用作燃料和溶剂。
Any of various isomeric paraffin hydrocarbons with the formula C8H18, found in petroleum and used as a fuel and solvent.
我们知道，一个水分子是由两个氢原子和一个氧原子组成的，它的分子式表示为h2o。
We have learned that water is made up of two atoms of hydrogen and one atom of oxygen, which we describe by the formula H2O.
薄荷脑是一种化学药剂，薄荷脑系由薄荷的叶和茎中所提取，白色晶体，分子式c 10h20o，为薄荷和欧薄荷精油中的主要成分。
Menthol is a chemical agent, menthol by the mint leaves and stems in the extract, white crystals, molecular formula C10H20O, mint, and peppermint oil to the main ingredient.
薄荷脑是一种化学药剂，薄荷脑系由薄荷的叶和茎中所提取，白色晶体，分子式c 10h20o，为薄荷和欧薄荷精油中的主要成分。
Menthol is a chemical agent, menthol by the mint leaves and stems in the extract, white crystals, molecular formula C10H20O, mint, and peppermint oil to the main ingredient.
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