How many moles are in 2.2 grams of niacin?

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Answer 1 · 2018-02-07T18:22:34

0.01787019738 moles in 2.2 grams of niacin

Niacin's equation is C6H5NO2. To find the molar mass, we must add the individual atomic mass of each element.

Carbon: #12.01*6=72.06#

Hydrogen:#1.01*5=5.05#

Nitrogen:#14.01*1=14.01#

Oxygen:#15.999*2=32#

Total:#72.06+5.05+14.01+32=123.11#

We now know that the molar mass is 123.11. With this, we divide the number of grams by the molar mass:

Moles: #2.2/123.11=0.01787019738# moles

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