Question

11. Correct the following statements
(a) A molecular formula represents an element.
(b) Molecular formula of water is H2O2
(c) A molecule of sulphur is monoatomic.
(d) CO and Co both represent cobalt.
(e) Formula of iron (III) oxide is FeO.

Answer 1

The correct statements are -

(a).  The number of elements present in a molecule is represented by molecular formula .

(b). The molecular formula of water is H$_{2}$O. H$_{2}$O$_{2}$ is the molecular formula of hydrogen peroxide.

(c). A molecule of sulfur is not monoatomic. It consists of 8 atoms.

(d). Co represents cobalt and CO represents carbon monoxide.

(e). The formula of iron (III) oxide is Fe$_{2}$O$_{3}$ .

Answer 2

Answer:

ur answer is

Explanation:

1. the no. of elements present in a molecule is represented by the molecular formula
2. H2O is the molecular formula for water
3. a molecule of sulphur is polyatomic
4. CO and Co represents carbon monoxide and cobalt respectively
5. formula of iron (lll) oxide is Fe2O3

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