Question

Calculate the number of mole found in 2 grams of oxygen

Answer 1

Atomic Mass of Oxygen = 16
Mass Given = 2grams

$no. \: of \: moles \: = \frac{mass \: given}{atomic \: mass}$
$= \frac{2}{16} = \frac{1}{8} moles \: or \: 0.125moles$