This is categorized as a combustion reaction.
1.75 moles or 1.8 moles if you’re rounding in terms of sig figs
Group 1 and group 7 of element group consists of alkali metal, which are generally combined with other elements in nature, so they have properties of compound
Single bonds are those that bond with one atom, and sigma bonds are the strongest type of covalent bonds that are single bonded.
That means NO, not all single bonds are sigma bond, but all sigma bonds are single bonds.
