Question

Weight of 0.5 mole of O2

Answer 1

O2 =16 multiply by 2
=32g/mole
therefore 0.5 mole of water=32 multiply by 1/2
=16

Answer 2

Given,

0.5 Moles of $O_{2}$.

To find,

Weight of 0.5 Moles of $O_{2}$.

Solution,

By applying the formula,

$No. of moles = \frac{Weight}{Molecular Mass}$,

We know,

No. of moles here is 0.5,

The molecular mass  $O_{2}$  is (16 x 2) 32 grams.

$0.5 = \frac{Weight}{32}$,

Weight = 0.5 x 32 grams,

WEIGHT OF 0.5 MOLES OXYGEN GAS IS 16 GRAMS.