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  • Vitamin B12,cyanocobalamin,is essential for human nutrition.It is concentrated in animal tissue but not in higher plants

    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
    英語(yǔ)人氣:576 ℃時(shí)間:2020-06-07 18:42:31
    優(yōu)質(zhì)解答
    鈷的相對(duì)原子質(zhì)量是59
    則胡蘿卜素的相對(duì)分子質(zhì)量是
    59/4.34%=1359.4g/mol
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