Question

Is there only one stable alkane of formula C4H10?

Answer 1

No, there are two stable alkanes with formula `"C"_4"H"_10`.

Explanation:

One is butane, `"CH"_3"CH"_2"CH"_2"CH"_3`.

The other is 2-methylpropane, `("CH"_3)_3"CH"`.