Describe how they could check the meter's accuracy using phenolphthalein and other indicator chemicals. Explain the consequences if an acidic solution gets in your blood.
please help!!

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).

the answer is c.the valence of the atoms combine .