Question

K- K2O- K ..................

Answer 1

Ответ:

K=K2O=KOH=K2SO4

2K + O2 = K2O2

K2O2 + 2K = 2K2O

K2O + 2H2O = 2KOH +H2

2KOH + H2SO4 = K2SO4 + 2H2O

Answer 2

In the given sequence, "K- K2O- K," the elements and compounds mentioned are:

1. K: This represents the chemical symbol for potassium, an alkali metal on the periodic table.

2. K2O: This represents potassium oxide. It is a compound composed of two potassium atoms (K) and one oxygen atom (O).

3. K: This represents potassium, as mentioned earlier.

It appears to be a sequence where potassium (K) is initially mentioned, followed by potassium oxide (K2O), and then potassium (K) again.