Question

Question #8fcbb

Answer 1

0.00278 moles of oxygen atoms are present in 0.05g of water.

Explanation:

Let us consider an equation:
`2H_2O->2H_2+O_2.`

So, 2 moles of water molecule consists of 1 mole of oxygen molecule.
In other words, 36 grams of water consists 2 moles of oxygen atoms .

`:.`0.05 grams of water consists of `=2/36xx0.05` moles of oxygen atoms , i.e. 0.00278 moles of oxygen atoms.