Vitamin B12,cyanocobalamin,is essential for human nutrition.

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/17 13:00:11

Vitamin B12,cyanocobalamin,is essential for human nutrition.It is concentrated in animal tissue but not in higher plants.Although nutritional requirements for the vitamin are quite low,people who abstain completely from animal products may develop a deficiency anemia.Cyanocobalamin is the form used in vitamin supplements.It contains 4.34% cobalt by mass.Calculate the molar mass of cyanocobalamin,assuming that there is one atom of cobalt in every molecule of cyanocobalamin.
___________ g/mol

钴的相对原子质量是59
则胡萝卜素的相对分子质量是
59/4.34%=1359.4g/mol

Vitamin B12,cyanocobalamin,is essential for human nutrition. 英语化学求摩尔质量!Vitamin B12,cyanocobalamin,is essential for human water is very essential for human beings Experience of the world is of course essential for all human Which is more important for your health :nutrition or exerci It is essential taht the human doesn't make a mistake .这句话是主英语翻译Patient cooperation is essential for satisfactory plaque 有It is essential for sb to do吗 People write computer programs,but it is essential for peopl 英语翻译Food,as essential prerequisite for existence,is substanc The possession of a passport is essential/necessary for fore 英语翻译Good workability at construction site is essential for h