Question

8g of a metal oxide contains 3.2 g of oxygen, then
oxide can be
(1) Mgo
(2) LI2O
(3) Na2o
(4) CaO​

Answer 1

Answer:

1 . MgO

Explanation:

we can find it by % of oxygen.

Answer 2

Answer:see here option 4 is correct. Cao.

Explanation:see, amount of metal is(8-3.2)or 4.8 gram, so from stoichiometry only Cao is nearby, approximately (4.0gram of CA involved) by this data, so undoubtedly it will be the correct answer.