How many moles of oxygen atoms are present in 0.6163 grams of niacin , C₆H₅NO₂?

Question

Quizplus · Accepted Answer

Niacin has the molecular formula C6H5NO2, which means it contains 2 oxygen atoms per molecule. The molar mass of niacin is approximately 123.11 g/mol. To find the moles of niacin in 0.6163 grams, we use the formula: moles = mass / molar mass = 0.6163 g / 123.11 g/mol ≈ 0.005 moles of niacin. Since each molecule of niacin contains 2 oxygen atoms, the total moles of oxygen atoms = 0.005 moles of niacin * 2 = 0.01 moles of oxygen atoms.

How Many Moles of Oxygen Atoms Are Present in 0