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Do you know the formula of ammonia? Or hydrogen peroxide? What is the structure of benzene?
Learn 200 chemical substances that are studied in introductory and advanced chemistry classes:
* systematic and trivial names;
* structures and formulas;
* o...
Learn 200 chemical substances that are studied in introductory and advanced chemistry classes:
* systematic and trivial names;
* structures and formulas;
* o...
Hello Tapper
为游戏打个分吧~