Question

Define mole and find the number of moles present in 12 g of oxygen gas.​

Answer 1

Explanation:

Here we are given the mass of oxygen gas as 12 grams.

${ {\underline {\underline {\mathtt {\red{Molar \: mass = 2×16 = 32 grams. }}}}}}$

We know the formula to calculate the number of moles. = 0.375 moles.

Answer 2

The mole is the unit of measurement for amount of substance in the International System of Units. A mole of a substance or a mole of particles is defined as containing exactly 6.02214076×10²³ particles, which may be atoms, molecules, ions, or electrons.

12 X 1 / 32 = 0.375 mole.