# Vitamin K has a molar mass of 173 g/mole and is 76.3% carbon by mass. How many carbo

Vitamin K has a molar mass of 173 g/mole and is 76.3% carbon by mass. How many carbon atoms are in one molecule of vitamin K?

 ebaines Posts: 10,588, Reputation: 5794 Expert #2 Mar 27, 2012, 09:27 AM
173 g/mole x 0.763 gives the grams of carbon per mole of Vitamin K. Divide that by the atomic weight of C to determine how many C atoms per molecule of Vitamin K.

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