Question

What does 16.0 grams of oxygen contains?

Answer 1

it contains 0.5moles of oxygen

Moles = mass/molar mass
molar mass of O2 =32g/mol

moles =16/32=1/2=0.5moles

Answer 2

$<b>Solutions :-$

Given :

Mass of Oxygen = 16.0 g

We know,
Molar mass of Oxygen = 16 g/mole

Now,
Find the number of mole containing 16 g of Oxygen :-
= (given weight)/(molecular weight)
= 16/16 = 1 mole

Hence,
16.0 grams of oxygen contains 1 mole.