Question

what is the mass of 0.2mole of oxygen atoms​

Answer 1

Answer:

3.2g

Explanation:

The atomic mass of Oxygen is 16 u.

In other words an atom of Oxygen would weigh 16 u or 1 mole of Oxygen atoms would

weigh 16 g .

Now that we’ve,

1 mole of Oxygen atoms weigh 16 g.

So, by unitary method we’ve,

1 mole → 16 g

0.2*1 mole → 0.2*16 g

0.2 mole → 3.2 g

So we’ve found that 0.2 mole of Oxygen atoms weigh 3.2 g.

Answer 2

Explanation:

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