How many moles are in 2.2 grams of niacin?

1 Answer
Feb 7, 2018

0.01787019738 moles in 2.2 grams of niacin

Explanation:

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

Good luck!