If3.91 potassium metal is allowed to react with oxygen,
O2, the reaction yields 7.11g of k2o.
How much oxygen was reacted?

1 a

2 d

3 a

4 c

explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).