Vitamin B₁₂, Cyanocobalamin, Has the Molecular Formula, C₆₈H₈₈CoN₁₄O₁₄P

question 11

Multiple Choice

Vitamin B₁₂, cyanocobalamin, has the molecular formula, C₆₈H₈₈CoN₁₄O₁₄P. What is the percent mass of cobalt in this compound?

• A) 1.02%
• B) 4.35%
• C) 10.3%
• D) 22.3%
• E) 23.2%

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