老问题啦, 请推荐眼霜# Fashion - 美丽时尚
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儿子六岁,上幼儿园。参加了mad science以后, 喜欢考我以下问题:
Please draw the molecular structure of vinegar.
Is methane liquid, gas or solid?
How many electrons are shared between the oxygen atom and the carbon atom in
sodium bicarbonate? I mean the oxygen connected to hydrogen.
What is the atomic number of argon?
LOL
Please draw the molecular structure of vinegar.
Is methane liquid, gas or solid?
How many electrons are shared between the oxygen atom and the carbon atom in
sodium bicarbonate? I mean the oxygen connected to hydrogen.
What is the atomic number of argon?
LOL